fat,protein,mineral,vitamin是可数名词吗?为什么后面可以加s呢?原文:Scientific information about your body's needs for fats,proteins,minerals and vitamins can help you decide on the right things to eat and the right amount to eat.

来源:学生作业帮助网 编辑:作业帮 时间:2024/09/11 02:04:29
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