Ulcerating
v. （使某物）形成溃疡( ulcerate的现在分词 ); （使）腐败
🗣️ 情景例句
It's me, Grandpa.
是我， 爷爷。
When is the most convenient time for us to meet?
我们什么时候见面最方便呢？
It's a long story.
说来话长。