Streptamine
链霉胺
🗣️ 情景例句
I can't go another step because I'm pooped.
我一步也走不动了，我已经精疲力尽了。
Let's stop discussing trivial details and come to the point.
咱们别再谈琐碎细节了，说正事吧。
When I touched him on the shoulder, he turned around.
我拍他的肩膀，他转了过来。