Phosphinylidene
氧亚膦基
🗣️ 情景例句
How much do I owe you?
我应付你多少钱？
How many sisters and brothers do you have?
你有几个姊妹和兄弟？
Could you come here, please? I want some help.
你能来这儿一下吗？我需要帮忙。