(1) He slipped and tumbled down the stairs.
(2) The scaffolding came tumbling down.
(3) (figurative)World records tumbled at the last Olympics.

(1) to supervise building work
(2) She supervised the children playing near the pool.
(3) [不可数名词, 可数名词]Very young children should not be left to play without supervision.

(1) My mood seems to fluctuate from day to day.
(2) wild fluctuations in interest rates
(3) Temperatures can fluctuate by as much as 10 degrees.

(1) a speech defect
(2) a defect in the glass
(3) There have been several defections from the ruling party.

(1) a feeble attempt to explain
(2) Don't be so feeble! Tell her you don't want to go.
(3) a feeble old man

(1) She wrote the book in collaboration with one of her students.
(2) The government worked in close collaboration with teachers on the new curriculum.
(3) collaboration between the teachers and the government

(1) prompt action was required as the fire spread.
(2) prompt payment of the invoice would be appreciated.
(3) Please be prompt when attending these meetings.

(1) Police are warning the public to be on the alert for suspicious packages.
(2) More than 5 000 troops have been placed on (full) alert .
(3) a bomb/fire alert

(1) I sneaked up the stairs.
(2) We sneaked a look at her diary.
(3) I managed to sneak a note to him.

(1) He donated thousands of pounds to charity.
(2) All donated blood is tested for HIV and other infections.
(3) He frequently donates large sums to charity...

(1) the authentic voice of young black Americans
(2) an authentic model of the ancient town
(3) authentically flavoured Mexican dishes

(1) His articles provided the main impetus for change.
(2) to give (a) new/fresh impetus to sth
(3) The debate seems to have lost much of its initial impetus.

(1) hopeful young actors and actresses dazzled by the glamour of Hollywood
(2) Now that she's a flight attendant, foreign travel has lost its glamour for her.
(3) Add a cashmere scarf under your jacket for a touch of glamour.

(1) financial transactions between companies
(2) commercial transactions
(3) the transaction of government business

(1) a severe handicap
(2) His injuries are severe.
(3) severe weather conditions

(1) The faint smell of her perfume lingered in the room.
(2) The civil war lingered on well into the 1930s.
(3) She lingered for a few minutes to talk to Nick.

(1) a corrupt regime
(2) corrupt officials accepting bribes
(3) corrupt practices

(1) The volcano could erupt at any time.
(2) Ash began to erupt from the crater.
(3) An immense volume of rocks and molten lava was erupted.

(1) New businesses thrive in this area.
(2) These animals rarely thrive in captivity.
(3) a thriving industry

(1) The car and the van collided head-on in thick fog.
(2) The car collided head-on with the van.
(3) As he fell, his head collided with the table.

(1) an obscure German poet
(2) He was born around 1650 but his origins remain obscure.
(3) I found her lecture very obscure.

(1) He's a versatile actor who has played a wide variety of parts.
(2) Eggs are easy to cook and are an extremely versatile food.
(3) [不可数名词]She is a designer of extraordinary versatility.

(1) Surgeons have successfully transplanted a liver into a four-year-old boy.
(2) Patients often reject transplanted organs.
(3) Japanese production methods have been transplanted into some British factories.

(1) He was offered money to betray his colleagues.
(2) She felt betrayed when she found out the truth about him.
(3) She betrayed his trust over and over again.

(1) I didn't realize you had political aspirations.
(2) He has never had any aspiration to earn a lot of money.
(3) He is unlikely to send in the army to quell nationalist aspirations.

(1) the elimination of toxins from the body
(2) There were three eliminations in the first round of the competition.
(3) Credit cards eliminate the need to carry a lot of cash.

(1) personality traits
(2) The study found that some alcoholics had clear personality traits showing up early in childhood...
(3) Creativity is a human trait.

(1) toxic chemicals/fumes/gases/substances
(2) to dispose of toxic waste
(3) Many pesticides are highly toxic .

(1) to face a dilemma
(2) to be in a dilemma
(3) The issue raises a moral dilemma.

(1) bacteria magnified to 1 000 times their actual size
(2) an image magnified by a factor of 4
(3) The sound was magnified by the high roof.

(1) Many years elapsed before they met again.
(2) Forty-eight hours have elapsed since his arrest.
(3) It is often said that time elapses . actually it does not. Time stays put . We elapse.

(1) His face expressed his grief more eloquently than any words.
(2) an eloquent speech/speaker
(3) His eyes were eloquent.

(1) Taxis must conform to the rigorous standards laid down by the police.
(2) Like most "peacetime wars" it did not conform to preconceived ideas.
(3) Does your electric blanket conform to BS 3456?

(1) I have accommodated the press a great deal, giving numerous interviews.
(2) I needed to accommodate to the new schedule.
(3) The hotel can accommodate up to 500 guests.

(1) The government has imposed export restraints on some products.
(2) wage restraint
(3) The police appealed to the crowd for restraint.

(1) I could elicit no response from him.
(2) Her tears elicited great sympathy from her audience.
(3) Mr Norris said he was hopeful that his request would elicit a positive response...

(1) I trust John implicitly.
(2) It reinforces, implicitly or explicitly, the idea that money is all-important.
(3) She had the implicit trust of her staff.

(1) learning by analogy
(2) The teacher drew an analogy between the human heart and a pump.
(3) There are no analogies with any previous legal cases.

(1) She lay in bed, contemplating.
(2) She contemplated him in silence.
(3) to contemplate your future

(1) a pair of spectacles
(2) a spectacle case (= to put your glasses in)
(3) The carnival parade was a magnificent spectacle.