Trekking
v. 艰苦跋涉, 徒步旅行( trek的现在分词 ); （尤指在山中）远足, 徒步旅行, 游山玩水
🗣️ 情景例句
It all sounded so easy
一切听起来都那么容易。
Science is organized knowledge.
科学是系统化的知识。
It's much cheaper to camp than to stay in a hotel.
露营比住旅馆要便宜多了。