Replacing
v. 替代；更换（replace的ing形式）
🗣️ 情景例句
Save your voices.
留着点嗓子。
Where is gate six?
6号登机门在哪儿？
Cave exploration, or pot-holing, as it has come to be known, is a relatively new sport.
洞穴勘查——或洞穴勘探——是一项比较新的体育活动。