It is crucial that it is ethically sound.这是什么从句?

It is crucial that it is ethically sound.这是什么从句? It is crucial that 的从句 it is crucial that those new plants be environmentally sound it is crucial that those plants be environmentally sound.请问这 it is crucial that i study for it It’s crucial to do/that 从句是什么? it is pretty crucial解释 It is therefore crucial that service to the Company. It is crucial that all books of account.翻译 英语,it is crucial that those new plants be why is it that 是什么从句? 翻译It is crucial that I study for it because it makes up 30%