Spirostane
螺旋甾烷
🗣️ 情景例句
I wonder if you would take a look at the old library
我不知道你是否可以看一看旧图书馆
Thereis no wool so white but a dyer can make it black.
羊毛再白，也能染黑。
Ironically, Europe, which had bequeathed the rabbit as a pest to Australia,
具有讽刺意味的是，欧洲把这种兔子作为有害动物传给澳洲，