Ulcers
n. 溃疡, 疡（ulcer的复数）
🗣️ 情景例句
and replaces it with a new glove
用一个新的手套来换它
How often do you go swimming?
你多久去游一次泳？
This brief experiment would dispel any further doubts you might have.
这一简单的试验会消除你可能存有的一切疑虑。