I had to adjust the straps on my backpack because they were just too loose.

我得调整背包带子，有点太松了。

He loosed the straps that bound her arms.

他松开了绑在她手臂上的带子。

The straps can be adjusted to suit the wearer.

这些背带可进行调整以适合使用者。

The straps cross over at the back and are tied at the waist.

带子在背后交叉，然后系在腰部。

The bag has narrow straps, so it may be worn over the shoulder or carried in the hand.

这个书包有细长带子，所有它可以被肩挎，也可以用手拎。

It's straps closed, and it has a buckle in the front.

这是用带子扣着的，而且在前面有一个带扣。