Sterone
甾酮, 固酮
??? 情景例句
Please look us up.
請和我們聯(lián)絡(luò)。
My hobby is collecting coins.
我的嗜好是收集硬幣。
Dad, this bag is too big. We can't carry it.
爸爸，這個包太重了，我搬不動。