I think we should take care of the environment, so that we have something to leave for our children.
我觉得我们应该保护好自然,以便将来能给我们的子孙后代留下一些东西。
'Your sister will be here in less than an hour and we must be at the station to meet her.
“再有不到一个小时你姐姐就要到这儿了,我们得去车站接她。