He had a small green backpack slung over one shoulder.

他把一只绿色小背包搭在一边肩上。

《柯林斯英汉双解大词典》

Backpacks should never be worn over just one shoulder.

永远都不要只把背包背在一边肩膀上。

youdao

Product Information: Vila One Shoulder Flower Print Dress, Asos.

产品信息：vila单肩印花连衣裙asos。

youdao

One of these is the expression, carry a chip on your shoulder.

VOA: special.2010.01.17

"On station one,we have robot arms. And what happens is the robots have different joints like a human arm -- one at the shoulder,one at the elbow, wrist and then a claw.

VOA: special.2010.07.28

- I like this one.- ANGELA: That's cool. But, like, I don't know aboutthe one-shoulder thing.

VOA: standard.other

She carried her large white purse on a long chain over one shoulder, and had covered her hair with a dupatta.

NEWYORKER: In Other Rooms, Other Wonders

One shoulder is three inches lower than it was on Sunday.

CNN: Happy to be leaving Las Vegas

Cage, his face screwed up with rage, one shoulder hitched higher than the other from a back injury, looks like Quasimodo without a bell rope to hang on to.

NEWYORKER: Bad Lieutenant: Port of Call New Orleans