谢讨论。sum of sums,too old for youth,....这些是最基本的英语用法。。。
回答: 谢W兄。基本同意你的说法和观点。只是具体关于“sum of sums“ 有不同意见。“too old for youth" 理解
由 Yimusanfendi
于 2016-12-14 10:39:20
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