Ulcers
n. 溃疡, 疡（ulcer的复数）
🗣️ 情景例句
That's a relief.
现在我放心了。
You may be interested in only some of the items.
你也许对某些产品感兴趣。
Half the world's telephone calls are made in English.
全球1/2的电话是用英语打的。