Switchblade
n. 弹簧小折刀（按钮式弹簧开启的, 等于switchblade knife）
✅ 同义词
🗣️ 情景例句
Anything else?
还有别的事吗？
Learn wisdom by the follies of others.
要从别人的愚行中学到聪明。
Yes. I don't think it's necessary to buy the bigger one.
有哇。我认为没必要买较大的机子。