come [kʌm] 词频1

vi. 来;开始;出现;发生; vt. 做;装扮…的样子;将满（…岁）; int. 嗨！;

"The time has come for action if these beautiful animals are to survive."

近义：impersonate, perform, personify, portray, represent, stage 反义：leave, absquatulate, retire, retreat, scat, split

over ['ovɚ] 词频1

prep. （表示方向）越过;（部份或全部覆盖）在…上面;由于;（表示论及）关于; adv. 结束;再;（倒）下;从一边至另一边; adj. 过去的;外面的;在上的;上级的; n. 额外;剩余;剩余（或多余）的量;剩余物; int. [电信学]报文完，请回复！; vt. 走过，跳过;[美国方言]从…恢复过来;

"The government did an about-turn over nuclear energy."

近义：above, on, up, regarding, relating, respecting 反义：under, below, beneath

help [hɛlp] 词频1 词根: /hʌn/

vt.& vi. 帮助;有助于， 有利于; vt. 治疗;避免;招待（客人）;给…盛（饭、菜）; n. 帮助;助手;补救办法;有用; vi. （在餐桌旁）招待，侍应，作仆人（或店员、服务员等）; int. [呼救语]救命！;

💡 同义词：assist，aid

"He finally agreed, albeit reluctantly, to help us."

近义：assist, assuage, attend, succor, succour, support 反义：leave, neglect, quit, strand, desert, forsake

tough [tʌf] 词频3

adj. 坚强的，坚韧的，不屈不挠的;艰苦的，困难的，难办的;牢固的，强壮的;粗暴的; n. 粗暴的人;暴徒，恶棍; vt. <口>忍耐，忍受（常与out连用）; adv. 强硬地，顽强地;以强硬的态度;

💡 tou(豆)+gh(腐):豆腐是- 坚韧的 强硬的 网友：yqy 补充：rough的东西当然tough；“他福”（谐音）：他如此坚韧，将来必定成功，这是他的福气

"The meat was tough and flavourless."

近义：arduous, laborious, onerous, oppressive, backbreaking, rough 反义：hearty, kind, loving, mellow, merciful, mild