Corrugations
n. 起皱；皱状；灌水沟；波纹成形
🗣️ 情景例句
Good morning. My name is Richard Stewart.
早安。我叫Richard Stewart。
If you want my advice,I don't think you should go.
如果你想要我的忠告，我不认为你应该去。
Do you see that notice? It says No Camping -- in case you can't read!'
你们看到那个布告牌了吗？上面写着‘禁止野营’－－除非你们不识字！”