Perhydrophenanthrene
菲烷, 全氢化菲
🗣️ 情景例句
They're both very good buys.
这两栋都是价格便宜的。
A ragged coat may cover an honest man.
不能以衣著取人。
It is all too easy to blame the railway authorities when something does go wrong.
因此，一旦铁路上真出了问题，人们便不加思索地责备铁路当局。