她背着一个宽肩带的信使包。

She carried a messenger bag with a wide ___shoulder-strap.

她调整了相机肩带的位置，让拍摄更舒适。

She adjusted the ___shoulder-strap on her camera for more comfortable shooting.

这个背包的肩带可以调节长度。

The ___shoulder-strap on this backpack is adjustable.