v. （使）旋转，合唱中的轮唱，放声高唱，钓（鱼）；n. 旋转，轮唱，钓

[例句] I trolled along to see Michael Frayn's play, 'Noises Off'...

[例句] He rowed her ashore and then continued trolling around the lake.

（使）停泊，阻碍，包起来，使无空闲；

[例句] He tied up the bag and took it outside.

[例句] Masked robbers broke in, tied him up, and made off with $8,000...

n. 机智，机敏，老练，圆滑，[乐]拍子，〈罕〉触觉；

[例句] On this occasion the press have not been intrusive and they have shown great tact.

[例句] ...helping to smooth over problems with great tact and efficiency.

adj. 有毒的，中毒的，因中毒引起的；n. 毒物，毒剂；

[例句] ...the cost of cleaning up toxic waste...

[例句] These products are not toxic to humans.

vi. 倾倒，摇摇欲坠，倾斜得好倾斜得好像要跌倒一样；vt. 将…推翻，打倒，使…跌倒；

[例句] He just released his hold and toppled slowly backwards...

[例句] Winds and rain toppled trees and electricity lines.

adj. 扭曲的，弯曲的，曲折的，不正派的，不正当的，转弯抹角的；

[例句] The only road access is a tortuous mountain route.

[例句] ...these long and tortuous negotiations aimed at ending the conflict...

n. 音( tone的名词复数 )，色调，腔调，全音 （英式英语）；

[例句] Cross could hear him speaking in low tones to Sarah.

[例句] ...the clear tone of the bell.

adj. 浓的( thick的比较级 )，厚的，稠密的，亲密的；

[例句] For breakfast I had a thick slice of bread and syrup...

[例句] He wore glasses with thick rims...

v. 试图，努力（ try的第三人称单数 ），考验，磨炼，审讯；

[例句] He secretly tried to block her advancement in the Party...

[例句] Try to make the effort to work your way through all of your tasks one at a time…

adj. 平稳地进行的，（说话）流畅的；n. 绊跌，轻快的舞；v. 说话结结巴巴( trip的现在分词 )，倾斜，绊倒，（使）犯错误；

[例句] On the Thursday we went out on a day trip...

[例句] Mark was sent to the Far East on a business trip.

n. 层( thickness的名词复数 )，浓度，厚（度），最厚的部分；

[例句] For breakfast I had a thick slice of bread and syrup...

[例句] He wore glasses with thick rims...

n. 小偷，盗贼，（使蜡外流的）蜡烛心结的烛花；

[例句] The thieves snatched the camera.

[例句] ...car thieves.

n. 吨，大量，许多；

[例句] Hundreds of tons of oil spilled into the sea...

[例句] Getting rid of rubbish can cost $100 a ton.

adj. 彻底的，全面的，充分的，彻头彻尾的，根本的，详尽的，严密的，十足的，考虑周到的，非常精确的，（对细节）不厌其烦的，绝对的，完善的；prep. 〈古〉同“through”；n. [英史]专横政策；

[例句] We are making a thorough investigation...

[例句] This very thorough survey goes back to 1784...

n. 部落，部族，[生]族，一帮，一伙，大群；

[例句] ...three-hundred members of the Xhosa tribe.

[例句] …a map of Maryland marked with the names of Indian tribes.

adj. 悲剧的，悲惨的；

[例句] It was just a tragic accident...

[例句] …the tragic loss of so many lives…

n. 专制统治者，暴君，（古希腊的）僭主，专横的人；

[例句] Since 1804 the country has mostly been ruled by tyrants.

[例句] ...households where the father was a tyrant.

n. 大片土地，（神经纤维的）束，小册子，一段时间，长时间；

[例句] A vast tract of land is ready for development...

[例句] They cleared large tracts of forest for farming, logging and ranching.

adj. （言语、想法等）老生常谈的，陈腐的，老一套的；

[例句] The movie is teeming with obvious and trite ideas...

[例句] The simple concepts he had been taught now sounded trite and naive.

adj. 值得信赖的，可靠的，把稳，妥靠，信实；

[例句] He is a trustworthy and level-headed leader.