thank you
polite formula used in acknowledging a favor, c.1400, short for I thank you (see thank). As a noun, from 1792.
| 词汇 | thank you | 
| 词根词缀 | Online Etymology Dictionary thank you polite formula used in acknowledging a favor, c.1400, short for I thank you (see thank). As a noun, from 1792. | 
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