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The top shelf sags because the books are too heavy.
因为过于沉重，书架上的书凹了下来。
youdao
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The old shelf folded up under the heavy weight.
旧架子在重压下坍倒了。
youdao
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The shelf is beginning to yield under that heavy weight.
架子受不了那重量，开始塌下去了。
youdao
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The shelf is beginning to yield under that heavy weight.
架子受不了那重量，开始塌下去了。
youdao