difficult

Learning a difficult language can be rewarding.

學習一門困難的語言是有回報的。

Many people find Mandarin to be a difficult language.

很多人覺得中文是一門困難的語言。

It is important to stay motivated when learning something difficult.

在學習困難的東西時，保持動力是很重要的。

Mastering a tough challenge can lead to personal growth.

掌握艱難的挑戰可以促進個人成長。

This language is not easy to learn, but it can be fun.

這門語言不容易學，但可以很有趣。

Learning a new skill requires a lot of effort and dedication.

學習一項新技能需要很多努力和奉獻。

It is important to avoid dangerous areas.

避免危險地區是很重要的。

Some animals can be very dangerous to humans.

有些動物對人類來說可能非常危險。

You should always be careful in dangerous situations.

在危險情況下你應該始終小心。

A hazardous situation can happen unexpectedly.

危險情況可能會意外發生。

Always check for the risk of injury when playing sports.

運動時要始終檢查受傷風險。

Using safety precautions is essential for your protection.

使用安全預防措施對你的保護至關重要。