Peristroma
护膜, 管状波膜
🗣️ 情景例句
The evening newspaper is cheaper than the morning paper.
晚报比早报要便宜。
Who is the author of this novel?
这篇小说的作者是谁？
I have never been able to look at a snail since then.
从那以后，我再也不能看一眼蜗牛了。