standing asleep
站着睡着了
以上为机器翻译结果，长、整句建议使用 人工翻译 。
His exhaustion was obvious when he fell asleep standing.
他站着睡着了，显然是太累了。
《新英汉大辞典》
For the first time in my life I was standing, and they were asleep.
在我的生命中，我第一次站起来了，而他们却在熟睡。
youdao
The posture when they are asleep is special, sometimes they sleep when they are standing.
犀牛睡觉的姿势很特殊，它们有时卧倒，也有时站着入睡。
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