Exchanging
v. 交换；兑换；交流（exchange的ing形式）
✅ 同义词
🗣️ 情景例句
How's that?
这是怎么一回事？
The shortest answer is doing.
最简短的回答就是做。
Later, an operation helped her to get back part of her sight, but she remained at the institution for six years more.
后来，一次手术帮助她恢复了部分视力。但是，她在这所学校又呆了6年。