它们正在做什么？它们正在游泳。它们正在爬树。

What are they doing? — they are swimming. They are climbing trees.

youdao

要有效地调整线程池大小，您需要理解正在排队的任务以及它们正在做什么。

To tune the thread pool size effectively, you need to understand the tasks that are being queued and what they are doing.

youdao

记下你在哪里看到鸟的，它们当时正在做什么。

Note where you saw the birds and what they were doing.

youdao