Tetraoxypyrimidine
四氧嘧啶
🗣️ 情景例句
Thank you. I appreciate your help.
谢谢！很感谢你的帮助。
A woman's work is never at an end.
妇女的活计做不完。
On motorways you can, at least, travel fairly safely at high speeds,
在公路上还好，你至少能以相当快的速度安全地向前行。