Phosphinylidyne
磷酰, 氧次膦基
🗣️ 情景例句
I want to thank you in advance.
在此先致谢，请多多关照。
What is the total circulation of this publication.
这家刊物总发行量多少？
You've done very well and made lots of progress.
你功课学得很好，进步很大。