Peristomium
围口节(环节动物)
🗣️ 情景例句
but I don't want to put it off too long.
但我希望不要拖得太久。
In every rank, great or small, 'Tis industry supports us all.
不论高的低的各级人士，所持的都是勤劳。
When the article arrived, the editor read the first sentence and then refuse to publish it.
稿子寄来后，编辑看第一句话就拒绝予以发表。