Polystichin
耳蕨素
🗣️ 情景例句
I don't think so.
我不这么想。
A friend is not so soon gotten as lost.
交友慢，失友快。
This is a major achievement because, in relative terms, planets are very small and old not emit light.
这是一个重要的成就，因为相对来说，行星很小，而且也不发光。