英语翻译我认为开这个会是必要的.______________________________.劝他没用.______________________________.众所周知,中国人口最多.______________________________.

It`s necessary to have the meeting.
it is useless tu urge him.
it`s kown that the population of china is huge.

I think it necessary to hold the meeting.
It's no use persuading him.
It's known to all that the population of China is the largest.