Background,

Push back the diagram,

Come back,

Betrayal,

Endorsement,

Backpack,

Looking back,

Back to back,

Vest,

Tongbei boxing,

Humpback whales,

Sweating,

Pants,

The thorn in the back,

Run counter to ...

Deviate,

Back there,

Back in Germany,

Heart to heart,

Basket,

Through the back of the paper,

Backlight,

Lumbago,

Treason,

Leave home,

Straps,

A tiger's back and a bear's back,

Backward,

Come back,

Recite,

Feel at home,

Come back,

Instep,

Bow back,

Violate,

Backrest,

Back clouds,

Dorsal fin,

attack sb both in front and in rear