ulcer例句

The ulcer had been troubling her for several years.
溃疡已经折磨她好几年了。

"It's my ulcer," he added by way of explanation.
“那是因为我得了溃疡，”他补充解释说。

A bacterium is identified as the cause for his duodenal ulcer.
一种细菌被断定为造成他十二指肠溃疡的根源.

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