งมเข็มในมหาสมุทร
ngom-khěm-nai-má-hǎa-sà-mùt
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Sense 1. Verb
- to look for a needle in a haystack (idiom; literally, to grope for a needle in the ocean)
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Sense 2. Verb
- to attempt a task that is almost impossible to accomplish (idiom)