(1) He lay there, unable to move. (2) I tried to contact him but was unable to. (3) The military may feel unable to hand over power to a civilian President next year...
unable [ʌnˈeɪbl] 📢 UK📢 US
n.沙；沙滩；沙色； vt.撒沙于；用砂纸磨光；
adj.不能的，不会的；无能力的，不熟练的；不能胜任的；〈罕，诗〉弱，无力的；
adj.特别受喜爱的； n.特别喜爱的人（或物）；
adv.真，真正；实在，果真；实际上；事实上；
(1) unfair criticism (2) It seems unfair on him to make him pay for everything. (3) It would be unfair not to let you have a choice.
unfair [ˌʌnˈfeə(r)] 📢 UK📢 US
n.行动，活动；功能，作用；手段；[法]诉讼；
adj.老式的，过时的；老派的，守旧的；村女蛾眉；陈旧；
adj.不公正的，不公平的；违反规则或准则的；
adj.疯狂的；猛烈的；着迷的；〔口语〕愤怒的，生气的； vt.使疯狂；
(1) a military/police/nurse's uniform (2) soldiers in uniform (3) The hat is part of the school uniform .
(1) I must write and thank Mary for the present. (2) There's no need to thank me─I enjoyed doing it. (3) In his speech, he thanked everyone for all their hard work.
(1) The coin rolled underneath the piano. (2) This jacket's too big, even with a sweater underneath. (3) underneath her cool exterior she was really very frightened.
(1) Can you understand French? (2) Do you understand the instructions? (3) She didn't understand the form she was signing.
understand [ˌʌndəˈstænd] 📢 UK📢 US
vt.放置；铺放；涂，敷；产卵； adj.世俗的；外行的；没有经验的； n.叙事诗；性伙伴；
n.小路，路；路线，路程；〈比喻〉（人生的）道路；（思想，行为，生活的）途径；
vt.& vi.懂，理解； vt.了解；默认；听说；领会；
参加…，参与…活动；插脚；厕；预；
(1) Have you looked under the bed? (2) She placed the ladder under (= just lower than) the window. (3) The dog squeezed under the gate and ran into the road.
(1) There was a lot of unhappiness in my adolescence. (2) His laugh-a-minute image is just a front to hide his deep unhappiness. (3) He had sensed his mother's unhappiness.
(1) an unfriendly atmosphere (2) There's no need to be so unfriendly towards them. (3) the use of environmentally unfriendly products (= that harm the environment)
(1) Such behaviour is totally unacceptable in a civilized society. (2) Noise from the factory has reached an unacceptable level. (3) unacceptably high levels of unemployment
(1) I've joined the union . (2) a union member (3) the Scottish Rugby union
union [ˈju:niən] 📢 UK📢 US
adv.故意地；深思熟虑地；从容不迫地；
prep.经过；通过，凭借；取道；
n.同盟，联盟；协会，工会；联合，团结； adj.工会的；
n.紧张，不安；紧张气氛；[物]张力，拉力；矛盾； vt.紧张；使紧张；
(1) I put up my umbrella. (2) colourful beach umbrellas (3) Many previously separate groups are now operating under the umbrella of a single authority.
umbrella [ʌmˈbrelə] 📢 UK📢 US
n.胜利；克服；成功；
n.努力，尝试；工作；成就；杰作；
n.旅行，旅程行期；历程，过程； vi.旅行，出游； vt.在…旅行或旅行到过…；
n.雨伞；〈比喻〉保护物；[军]空中掩护幕；总括；
(1) I'm older than her. (2) There was more whisky in it than soda. (3) He loves me more than you do.
than [ðən] 📢 UK📢 US
n.意外事件；事故；机遇，偶然；附属品；
vt.& vi.（使）腐烂，腐朽； vi.衰败，衰退，衰落； n.腐败、衰退的状态；
vt.停止，终止，结束； vi.终止，停止；永不停止的过程；停止行动； n.停止；
conj.比（用于比较级）；宁愿…而不愿；除…以外；一…就； prep.超过；比；
(1) He unfairly blamed Frances for the failure. (2) He had unfairly presented a caricature of my views. (3) Workers who have been unfairly dismissed may claim compensation.
unfairly [ʌnˈfeəlɪ] 📢 UK📢 US
adv.不公平地，不公正地；不正当地；
n.工作，任务；作业；苦差事； vt.交给某人（任务）；使过于劳累；
vt.印；给…以深刻印象；使铭记； n.印象；印记；
n.penny的复数；
(1) an unexpected result (2) an unexpected visitor (3) The announcement was not entirely unexpected .
(1) The desire to be a mother may creep up on you unexpectedly. (2) Miserable, and unexpectedly lonely, she went in search of Jean-Paul. (3) She panics when people pop in unexpectedly, rushing round plumping cushions.
unexpectedly [ˌʌnɪkˈspektɪdlɪ] 📢 UK📢 US
adj.焦虑的；紧张不安的；神经质的；
vt.占领；使用，住在…；使从事，使忙碌；任职；
adj.不舒服的；令人不舒服的；不自在的；不安的；
adv.未料到地，意外地；竟；居然；骤然；
(1) How long have you been unemployed? (2) an unemployed builder (3) [复数]a programme to get the long-term unemployed back to work
unemployed [ˌʌnɪmˈplɔɪd] 📢 UK📢 US
n.先生；绅士；有身份地位的人；
为…而征战，参加支持…的活动；
n.昨天；往昔；<正式>过去； adv.在昨天，在昨日；近来；
adj.被解雇的；失业的；不在使用中的；未用的； n.失业者；
(1) The committee has little or no understanding of the problem. (2) The existence of God is beyond human understanding (= humans cannot know whether God exists or not) . (3) We finally came to an understanding about what hours we would work.
(1) unfortunately, I won't be able to attend the meeting. (2) I can't make it, unfortunately. (3) unfortunately for him, the police had been informed and were waiting outside.
(1) a technical/legal/scientific, etc. term (2) a term of abuse (3) ‘Register ’ is the term commonly used to describe different levels of formality in language.