Aphthous ulitis
[醫] 口瘡性齦炎
?? 詞語組成解析
[醫] 口瘡的
齦炎
??? 情景例句
Now the hard work begins.
艱苦的工作現在開始了。
He that knows nothing, doubts nothing.
無知就無疑。
They lived by hunting and by gathering roots, nuts and wild fruits.
他們靠狩獵和采集根莖、堅果和野果為生。