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1. shut out 退关;排除，把…关在外边;障蔽; [例句]'I shut him out of the bedroom,' says Maureen. “我把他关在了卧室外面，”莫琳说。 2. sit in 照看;出席，旁听;代替;静坐示威; [例句]Will they permit you to sit in on a few classes? 他们会同意你旁听几节课吗? 3. sit up 熬夜;(使)端坐;晚睡; 引起注意; [例句]Her head spins dizzily as soon as she sits up. 她一坐起身来就感到天旋地转。 4. speed up (使)加速;开快车;加紧;增速; [例句]You notice that your breathing has speeded up a bit. 你注意到自己的呼吸加快了一些。 5. stand out 突出;坚持;超群;向前跨步; [例句]Every tree, wall and fence stood out against dazzling white fields. 每棵树、每堵墙和每道栅栏都在白得耀眼的田野映衬下十分夺目。 6. stand up 起立;竖立;经久耐用; 失约; [例句]He made wild accusations that did not stand up. 他的指控毫无根据，根本站不住脚。 7. step up | 
