The campaign aims to reduce the number of unbelted drivers on the road.

这次活动旨在减少道路上未系安全带的司机数量。

The driver was fined for driving unbelted.

司机因未系安全带而被罚款。

It's dangerous to ride unbelted in a moving vehicle.

在行驶的车辆中未系安全带是危险的。

The police officer noticed the passenger was unbelted.

警察注意到乘客未系安全带。

He always reminds his friends not to stay unbelted in the car.

他总是提醒朋友们不要在车里未系安全带。

As each rider swung down from his saddle, he unbelted his arakh and handed it to a waiting slave, and any other weapons he carried as well.

每个人下马后，便解开腰际的亚拉克弯刀，以及随身携带的其他武器，交给旁边的奴隶，