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- He gets cheerful and depressed by turns. 他的情绪高一阵低一阵。
- The shop assistants had to have their days off by turns. 店员要轮流休息。
- You'd better not do the experiment by yourself. 你最好不要单独一个人做试验。
- You two will stay with the sick person by turns. 你们二人轮流地看守这位病人。
- You 'd better not do the experiment by yourself . 你最好不要单独一个人做试验。
- The book is,by turns, funny and very sad. 这部书时而妙趣横生，时而悲悲戚戚。
- Please oblige me by turning down the radio. 劳您驾，请替我把收音机音量调低一些。
- We clean the classroom by turns. 我们轮流打扫教室。
- They laughed and cried by turns. 他们一会哭一会笑。
- You should broaden your experience by travelling more. 你应该多到各地走走以增广见识。
- We looked after the little boy by turns. 我们轮流照看这个小男孩。
- The students are told to go about the experiment by rule and line. 学生们被告知必须准确地做实验。
- The teachers were on duty by turns. 教师们轮流值班。
- Geomantic turn by turns, since tide tide falls. 风水轮流转，潮起又潮落。
- Taxpayers got relief by turning the heat on their congressmen. 纳税人采用向国会议员施加压力的办法来获得减税。
- Repeat the experiment by changing the mass of the paper clip. 使用质量不同的回形针重做这个实验。
- Students clean the classroom by turns. 学生们每天轮流打扫教室。
- Their job is to finish the experiment by the end of this week. 他们本周的工作就是完成这个实验。
- Members convene meetings by turn. 议员须轮流担任会议的召集人。
- We broaden in experiences by traveling. 旅行增长我们的经验。
