Constantane
[化] 康铜
🗣️ 情景例句
I don't know how to drive I'm afraid.
恐怕我不懂得怎样开车。
What does he do?
他是干什么的？
The basic features include a crest (the highest point of the wave),
它们的基本特征包括浪峰（波浪的最高点）