Xie was handcuffed and brought back to the customs hall by force.
谢峰被戴上手铐，被强迫带回了海关大厅。
Two coils move the piston back and forth magnetically at a constant force.
两组线圈在一个连续电磁力的作用下来回移动一个微型活塞。
Lateral force can not brush back and forth otherwise they will damage gums.
不可横向来回用力刷，否则会损伤牙龈。
Two coils move a piston back and forth magnetically at a constant force.
两组线圈在一个连续电磁力的作用下来回移动一个微型活塞。
Two coils move a piston back and forth magnetically at a constant force.
两组线圈在一个连续电磁力的作用下来回移动一个微型活塞。
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