- (转身)进入；拐入，折入：
He turned in his own gate.
他转身走进自家的大门。
We turned in at the entrance.
我们从入口进去了。
- (使)(趾等)内倾，(使)内弯：
His toes turn in.
他的脚趾向内弯。
- [美国英语]交上，交进，上缴：
Turn in your dissertation next month.
下个月交你的学位论文。
The coach has already turned in his resignation.
教练已经提交了辞呈。
They have turned in all the weapons.
他们已经把所有武器都上缴了。
- [美国英语](向警察局)告发，出卖；移交，引渡：
He turned them in to the police for being involved in the riot.
他向警方告发他们卷入了暴乱。
The hit-and-runner turned himself in later.
肇事后逃跑的司机后来自首了。
- 把…向里折，把…对折，折进：
The edges of the cloth should be turned in and sewn firmly.
布边应折进并缝紧。
- [口语]上床睡觉，就寝：
The students turn in at half past eleven.
学生11点半睡觉。
- 作出，完成，取得；表演：
My students turned in a good performance at the English evening.
我的学生在英语晚会上作了出色的表演。
- 交换；折价贴换：
I turned my old refrigerator in on a new one.
我把旧冰箱折价贴换了一台新的。
- [口语]放弃，抛弃，脱离：
She turned in her job because she wanted a change.
她辞去了工作，因为她想换换环境。
- 归还；交还：
Turn in your uniform before you leave.
离开前交还制服。
- 【航海学】系上(绳索)，绕起绳索接到(穿孔木滑车等)上：
He fixed the rope around the post by turning it in.
他把绳索系在柱子上。