我钻进了干净平整的被单中。

I slipped between the crisp clean sheets.

《柯林斯英汉双解大词典》

面必须坚固、干净、平整，无油污、浮尘以及其它松动物。

The base surface must be sound, clean, smooth, no oil, dust and other loose animals.

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他当时正穿着一件衬衫，干净雪白，熨得平平整整。

He was wearing a shirt now. Clean and white and neatly pressed.

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他当时正穿着一件衬衫，干净雪白，熨得平平整整。

He was wearing a shirt now. Clean and white and neatly pressed.

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