动词短语
中文翻译：Unknown
同义词：
['stray', 'be lost in thought', 'be at a loss for words']
例句：
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1. I've been at sea for hours without any sign of land.
我已经在海上迷失了几个小时，没有看到任何陆地的迹象。
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2. She was at sea with her thoughts about the future.
她对未来的想法陷入了沉思。
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3. He was at sea for words when he realized what he had done wrong.
当他意识到他做了什么错事时，他无言以对。