Nfb
负反馈
🗣️ 情景例句
I can't figure him out-he's a mystery!
我不能理解他，他真是个迷。
Your shoe lace is loose.
你的鞋带松了。
We need our order number on the outside of each box.
我们需要每只箱子的外观都打上订购号码。