Selenanthrene
硒士林, 9,10-二硒杂萘
🗣️ 情景例句
Thank you,
谢谢你。
I understand completely.
我完全理解。
Only in a sparsely-populated rural community is it possible to disregard it.
只有在人口稀少的农村，才可以忽视准时的习惯。