我觉得很满意，我是微笑不累的。

I felt so satisfied and because of the smile I wasn't tired at all.

youdao

我啊最近有点不舒服老是头疼是不累的?。

I ah a bit uncomfortable recently is often headaching unwearied ?

youdao

科勒曼说，而人有时在太累的情况下睡不着，却没有证据证明他们在不累的时候可以睡着。

While humans sometimes cannot sleep when tired, there is no evidence that they can sleep when they are not tired, Klerman explained.

youdao

Or maybe you're working with your friend, and your friend is very overwhelmed

又或者你在跟你的朋友一起干活，你朋友累得实在坚持不下去了。

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