Bluetooth
n. 蓝牙技术（一种无线通信的标准）
🗣️ 情景例句
What line of work are you in?
你做哪一行的？
You two don't have much contact
？ 你们俩没怎么联系吗？
Are all the things in the car now?
现在所有的东西都在车上吗？