double head set的用法和样例：
- There's a head set plug in the armrest for you to enjoy music.
- Right by thumb you can see the place where you plug in the head set.
- Add Bluetooth icon to dial screen while head set profile is connected.
- Swimmy desire the person that the symptom such as fall forward, dazed, tinnitus is highlighted increases acupuncture point of double head dimension.
- On the basis of research on com harvesters at home and abroad, a double head of picker and forage for sell-walk corn harvester should be designed.