上交、归还、交还、上床睡觉
turn in //
动词 to go to bed for the night 在夜晚来临前上床睡觉
make an entrance by turning from a road
carry out (performances)
同义词： put on
prepare for sleep
同义词： go to bed / bed / crawl in / kip down / hit the hay / hit the sack / sack out / go to sleep / retire
系上(绳索)，绕起绳索接到(穿孔木滑车等)上：
【英语】考前过单词关,得词汇者得天下（巧记速记一） ... turn down（放小音量等，拒绝） ， turn in（上交）， turn against（反对）， ...
turn in 交还,上交;上床睡觉
turn in 交还,上交;上床睡觉
爸爸短暂性失眠怎么办好_早睡早起翻译英语短语（二）_早睡早起翻译 ... turn down关小,调低;拒绝 turn in转身进入;拐入;交出 turn into进入;使变成,使成为 ...
Her feet turn in.
她的两脚呈内八字。
My father would turn in his grave if he knew.
我父亲知道的话在九泉之下也会不得安宁的。
You must turn in your pass when you leave the building.
你离开大楼时必须交还通行证。
But if you are more interested in fast cars, here is a new turn in the world of motorsports.
VOA : special.2010.07.30
Also we will have students doing workshops and problem-solving where the students will solve problems as a group, a group of three and turn in a common work sheet.
我们还有学生做研讨会,以及问题解决,从而学生可以以三人小组为单位,解决问题,最后上交平常的作业。
媒体、教育、市场课程节选 : 麻省理工公开课
So usually, I don't have to do much more than google, and turn in the first sentence and sure enough,
所以，我经常谷歌，输进第一句话，然后非常确信，
SpeakingMax英语口语达人 : 对于抄袭的想法
Some require their students to turn in early versions of term papers, research papers and essays they are writing.
VOA : special.2009.04.23
They would build a canal to carry them past the turn in the river, past the Confederate cannon.
VOA : special.2009.11.19
For that, they may give thanks to a fortuitous turn in the political cycle.
He held the lead for four laps, but was passed on a turn in the fifth.
In some towns, he gave customers a week to turn in their receipts for a rebate.