Backpacking
n. 徒步旅行
📖 牛津释义
backpacking
n [U].
🗣️ 情景例句
Fortunately, they returned safely.
说来幸运，他们平安回家了。
Got all in a panic.
惊恐万分。
As far as policy is concerned, I have to say something.
谈到政策，我得说几句。