| 词汇 | cos | 
| 释义 | cos  conjunction UK (also 'cos) uk/kəz/ us/kəz/ (US cuz)  (口语)因为 not standard for because  You can cook dinner tonight cos I did it last night. 今晚该你做饭了,因为昨晚是我做的。  cos  noun  mathematics specialized  余弦(cosine的缩写) written abbreviation for  cosine specialized  | 
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