The quality of the lifebelts sold by this shop is not up to national standards.

这家店铺售卖的救生圈质量不符合国家标准。

The guide handed out prepared lifebelts to every visitor.

导游为每位游客发放了准备好的救生圈。

The sailor on the boat threw a lifebelt at the drowning tourist in the water.

船上的水手向水中的溺水游客扔了一个救生圈。

DY5555 lifebelt serve personal lifesaving equipment.

DY 5555救生圈发球个人救生设备。