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。
What a relief it was when the boulders suddenly disappeared, giving way to a stretch of plain where the only obstacles were clumps of bushes.
突然大石块不见了,前面是一片平地,唯一的障碍只有一簇簇灌木丛。这使我们长长地松了口气。