One learns a language by making mistakes and correcting them.

人们通过不断犯错误并改正错误来学习语言。

The new glasses will correct your sight.

这副新眼镜会矫正你的视力。

Everyone gives a different answer, but everyone is correct.

每个人的答案都不相同，但是大家都是正确的。

Only if you eat the correct foods will you be able to keep fit and stay healthy.

只有恰当饮食，才能保持身体健康。

correct behaviour

得体的行为

It’s not correct to speak like that.

那样说话不妥。