Ethanamidine
乙脒
🗣️ 情景例句
Are all the terms here acceptable to you?
这里所有的条款你都能接受吗？
You look very serious about something.
你似乎有很严重的事。
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。