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Basic materials和Auxiliary materials,后面要加S吗?
我的都是多项
人气:102 ℃ 时间:2020-07-03 20:35:08
解答
Basic materials
是基本材料,因为不止一项,所以必须加"s"
Auxiliary materials
是辅助材料,有可能只是一项或多项,可加可不加.但通常都不加.
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