She scrubbed the kitchen floor until it was clean as a whistle.
她把厨房的地板擦得乾乾净净。
She scrubbed the kitchen floor until it was clean as a whistle.
她把厨房的地板擦得乾乾净净。
The feed-pipe is as clean as a whistle, so I’m afraid, if the oil is not getting through to the burner, the valve must be faulty.
送料管干干净净, 所以我担心要是油不通
, 
一定有毛病。
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