I also leave it as an exercise to the reader to decide which is the case here.

我同样将它留给读者作为练习，请自行判断我们这里的练习属于哪种情况。

youdao

I never leave the house without my book, and if I'm taking a train I'll usually have a back-up book in case I finish the first one.

我从来不会不带书出门，如果是搭火车的话，我一般会准备一本备份的，以防第一本读完。

youdao

So in the case of the smiley faces that I made, I actually fold the DNA into a disk, but then leave two holes for the eyes and the mouth.

在我做笑脸形状时，我将DNA折成一个圆盘，然后留了两个洞作为眼睛和嘴。

youdao

I'll leave the keys, case you want to run the heater some.

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And if that weren't the case, I would not expect him to leave her in the job.

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"I rarely leave or receive voicemail messages in any case, " he told the court.

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