Tetranitrocompound
四硝基化合物
🗣️ 情景例句
What do you consider important when looking for a job?
你选择工作时主要考虑是什么？
The course of true love never did run smooth.
好事多磨。
I heard that you're getting married, Congratulations.
听说你要结婚了，恭喜！