The tough thing is trying to instil a winning attitude in the kids.

困难在于要尽力给孩子们灌输胜利的心态。

《柯林斯英汉双解大词典》

"The tough thing is that the relationship will change when they return to the real world," Sanderson said. "One person might see it as a summer romance."

“问题是当他们回到现实世界中，这种关系就会改变，”桑德森说，“有的人会把这种视为夏日恋情；有的人则认为这是长期恋情的开始。”

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This is the first thing people do when times are tough.

这是在困难时期人们立刻会去做的一件事。

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But the tough thing is, you saw that poll this week, I mean you've got a long way to go.

BBC: News | BREAKFAST WITH FROST | Conservative Leader, Iain Duncan Smith MP

The trick is upgrading them properly, which is a really tough thing to get a handle on.

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"We're a certain kind of culture which makes it hard for us to behave rationally when the rational thing is to be tough, " he says.

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