zhè / zhī / bēi bāo / de / xiōng dài / pèi yǒu / kě tiáo jié / de / qiǎ kòu / zǒu lù / shí / bù róng yì / huá luò

这只背包的胸带配有可调节的卡扣，走路时不容易滑落。

The chest strap of this backpack has an adjustable clip, so it is less likely to slip off while walking.