You're just going to have to tough it out.

你只好硬着头皮撑到底了。

Tough it out, and you will find it rewarding.

坚持下去吧，你会得到回报的。

Winter gives wildlife two basic choices: leave or tough it out.

冬季给野生动物两种选择：离去或者忍耐。

Since we have to tough it out, why not get ourselves psyched up for victory?

既然我们一定要坚持到底，为什么不为成功作好心理准备呢？