tough

The soles of these hiking boots are made of a tough rubber designed for rocky terrain.

(Chinese) 这些登山鞋的鞋底由坚韧的橡胶制成，专为多岩石地形设计。

This cut of beef is quite tough and needs to be slow-cooked for several hours.

(Chinese) 这块牛肉相当老，需要慢火炖煮几个小时。

The marathon runners had to endure tough weather conditions, including heavy rain and wind.

(Chinese) 马拉松跑者必须忍受艰苦的天气条件，包括大雨和大风。

The government is introducing tough new laws to reduce environmental pollution from factories.

(Chinese) 政府正在出台严厉的新法律，以减少工厂造成的环境污染。