known substance
英
美
- 已知物,已知物质
双语例句
- Diamond is the hardest substance known.
钻石是已知物质中最硬者。 - But aerogel is able to slow the particles down to a halt within the space of a few dozen microns, and preserve them better than any known substance.
但是气凝胶能够让这些颗粒减速并最终在几十微米的距离上停下来，比其他任何已知物质更好的保护它们。
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