Pervesterol
[化] 藻脂甾醇
🗣️ 情景例句
It's extremely good of you to do this for me.
你帮我做了这件事，真是太好了。
He might not be here.
他可能不在这儿。
The hovercraft is particularly useful in large areas with poor communications such as Africa or Australia;
气垫船在非洲、澳大利亚等交通不发达地区特别有用。