The Spaces are not preserved from the content.
不保留内容中的空格。
The dead plankton on the bottom must be preserved from oxidation.
在海底的浮游生物必须被保护起来以免遭氧化作用。
Some sporadic records preserved from the ancient literatures can hardly help people really understand the origin of numbers.
古代文献中保存下来的一些零星记载也无法让今人真正了解数的起源。
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