The area that they're searching is 70 miles wide, so these are really really hard conditions.

搜救人员的搜索区域有70英里宽，救援条件非常非常艰苦。

When you're young and in hard condition you can absorb a lot of punishment.

当你年轻时， 在艰苦的条件下， 你可以承受很多惩罚。

It is not to be believed that any but the dullest Britons can be good subjects under that hard condition.

在那种艰苦的条件下， 除了最迟钝的英国人之外， 其他任何人都不能相信成为好臣民。