Cissoid
凹边的,蔓叶线的
🗣️ 情景例句
Philip, do you have the key to the trunk?
Philip衣箱的钥匙在你那吗？
You'll hurt your thumb, if you don't take care.
你不专心的话，就会伤到你的拇指。
I can't make this machine run properly.
我无法使这部机器正常运转。