Exchanging
v. 交换；兑换；交流（exchange的ing形式）
✅ 同义词
🗣️ 情景例句
He started out as a salesman.
他开始时当推销员。
There is a time to speak and a time to be silent.
该说话时说话，该沈默时沈默。
But most probably it will all depend upon campers themselves:
但最重要的或许是露营者自己，