351. shut out 排除，不让…进来
    EG: This shut out any danger of fire.这排除了失火的危险。
       The late comers were shut out the stadium.迟到者都被关在体育场外面。
352. sick of 厌烦
    EG: She is sick of doing nothing. 她因无所事事而厌烦。
353. sit for （准备）参加（考试），应考
    EG: He sat for the entrance examinations.
354. sit in（on）列席，旁听
    EG: I was allowed to sit in on the deliberations of the board. 我被允许出席委员会的评议会议。
355. sit up 迟睡，熬夜
356. speed up 使加速（反义slow down；同义step up）
357. stand by
    [1]站在一边，袖手旁观；
    [2]支持，帮助。
358. stand for 代替，代表，意味着
359. stand out 突出，显眼
    EG: He stands out in the crowd, as he is 2 meters in height. 他在人群中显得很突出，因为他身高2米。
       The two girls stood out from the whole class, and were always winning prizes for school work. 这两个女孩子在班上表现得很出色， 因成绩优异而频频获奖。
360. stand up
    [1]站起来；
    [2]（论据、论点等）站得住脚。
361. stand up for 支持，维护，保卫
    EG: Don’t be afraid to stand up for your rights. 不要害怕维护你的权利。
362. stand up to
    [1]勇敢面对，反抗；
    [2]经得起，顶得住。
    EG: He is too weak to stand up to her. 他太软弱，不敢面对她。
363. start from scratch 从头做起，从零开始
364. step in 插入，介入
EG: If the police had not stepped in when they did there would have been serious violence. 当时警方迟一些干预就会发生严重的暴力事件了。
365. step up 加快，加速，增加
    EG: When John found himself going to be late, he stepped up his face.当约翰发现自己要迟到时，他就加快了步伐。
EG: The factory has stepped up production. 工厂提高了产量。