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They have high body densities and can't help but sink.
它们的身体密度很高，没有办法不下沉。
youdao
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High energy densities cause significant surface decomposition and damage.
高能量密度可引起明显的分解和损伤。
youdao
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High energy densities cause significant surface decomposition and damage.
高能量密度可引起明显的分解和损伤。
youdao