Dihydrocholesterol
二氢胆甾醇, 二氢胆固醇
🗣️ 情景例句
You're in sad condition.
你的健康很成问题。
Is it direct train?
这是直达车吗？
I have just received a letter from my old school, informing me that my former headmaster,
我刚刚收到母校的一封信，通知我说以前的校长