Lactamine
丙氨酸
🗣️ 情景例句
That's alright. You're a lot of help.
没关系。你帮了很大的忙。
When you're learning to drive, having a good teacher makes all the difference.
初学驾驶有好的教师指导，差别很大。
Since that time, various types of hovercraft have appeared and taken up regular service.
从那以后，各种各样的气垫船出现了，并开始了定期航行服务。