1.All the students have to give presentation by turns.

所有学生要轮流作演讲。

2.By and by the days turned cold.

渐渐，天冷了。

3.He kissed and embraced each of them by turns.

轮流亲吻和拥抱每个孩子。

4.By turning boring time into listening time.

通过把无聊时间练听力时间。

5.By turning you into a weaponized cyborg?

把你武器机械人叫做救你吗？

6.His obsession could make him by turns hustling, mean and dejected.

痴迷会让时不时地得急躁、刻薄和沮丧。

7.Growers and users are by turns livid and scared.

大麻种植者和使用者怒气冲冲得恐惧起来。

8.The snake is eaten in turn by an owl.

接着蛇被一只猫头鹰吃掉。

9.By turning clay into liquid, the process is dramatically shortened.

通过将粘液体，这一过程大大缩短。

10.It works by turning language into something computers can understand, math.

它工作原理是将语言转化为计算机可以理解东西，即数学。

11.They do it by turning their bodies into animated message boards.

它们将自己身体活动留言板。

12.Metabolism is the process by which living things turn food into energy.

新陈代谢是生命将食物转化能量过程。

13.By turns philosophical and polemical, this is a provocative and fascinating book.

时而富有哲理，时而充满争议，这是一本发人深省且引人入胜书。

14.They tested the wind by turning their heads this way and that.

们把脑袋转来转去地测试着风向。

15.Bereavements and blessings, one following another, make us sad and blessed by turns.

痛苦与幸福交替出现, 使得我们一会悲伤一会高兴。

16.And there's much to be gained by turning your attention to plants.

把你注意力转向植物会有很多收获。

17.Reduce their ambiguity and make them clear by turning them into simple if-then statements.

通过将这些想法转化为简单“如果-那么”语句来减少它们模糊性并使其清晰。

18.No problem. So, start by turning the computer off and inserting the DOS disk.

不客气，你先关闭电脑，插入DOS盘。

19.They did this by turning mouse stem cells into female cells in a lab.

们在实验室里将老鼠干细胞转为雌性生殖干细胞，从而实现了这一点。

20.So, what should you do? Start by turning off the phone and unplugging any wires.

那么，你应该怎么做呢？先是关闭手机并拔掉所有电线。