drop a bucket into an empty well 是什么意思,drop a bucket into an empty well 的翻译,解释,句子,音标,读音 - 英汉在线翻译

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drop a bucket into an empty well

drop a bucket into an empty well 的中文翻译

空井打水, 徒劳无益

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photoglyph
drag for
tripping gear
induplicate
conventional truck
tracer aid
tank volume charts
umbellate form