If you don't train hard, you will lose the game.

如果你不努力训练，你会输掉比赛。

Athletes train hard to improve their performance.

运动员努力训练以提高他们的表现。

Athletes train hard to compete in the Paralympics.

运动员们努力训练以参加残奥会。

Athletes train hard so they don't lose their competitive edge.

运动员们努力训练，以免失去竞争优势。

Athletes train hard to outcompete their rivals in the competition.

运动员努力训练以在竞争中胜过比赛中的对手。

But his mom taught him to train hard.

不过，教导他刻苦训练的则是他的母亲。

This is a special case; they want to train hard.

这是一个特例，她们想要更艰苦的训练。

They also train hard and must learn each move correctly.

他们也努力训练，而且必须正确学习每个动作。

We'll train hard and be back ready for the FA Cup.

我们会努力训练为足总杯做好准备。

The aim is to encourage athletes train hard and strive to improve their skills.

其目的是为鼓励运动员刻苦锻炼，努力提高运动技术水平。