Aphthous ulcer
[医] 口疮性溃疡
🧩 词语组成解析
[医] 口疮的
ulcer
['ʌlsə]
n. <医>溃疡;腐烂物;道德败坏;
🗣️ 情景例句
In addition, it's great exercise too, since we do a lot of hiking.
还有，那也是个好的运动，因为我们要长距离徒步旅行。
He who wants a mule without fault, must walk on foot.
如要骡子无缺点，只有自己徒步行。
I said that together we could light a fire that could be seen for many miles.
我说，我们一起点燃一堆火，让几英里远都能看见。