weightlessness的英语例句
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Simon lifted a weighty volume from the shelf.
西蒙从书架上取下一本厚重的书。
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Surely such weighty matters merit a higher level of debate?
这样重大的事件谅必应进行更高级别的讨论吧?
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This was a subject most of the people thought weighty.
这是一个大多数人认为严肃的题目.
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