警察在他汽车周围设置了防卫圈以保护他。

Police officers threw a cordon around his car to protect him.

youdao

船坞外缘贴着一圈旧轮胎，用来保护进坞的船只。

Old tires line the floating dock to protect the boats.

youdao

这样一个生态圈保护区有26层楼和50000名职员。

One such biosphere has 26 stories and a staff of 50,000.

youdao

采用防尘盖和密封圈双重保护，隔绝污染。

Dust cover and seal with double protection, isolated pollution.

youdao

采用防尘盖和密封圈双重保护，隔绝污染。

Dust cover and seal with double protection, isolated pollution.

youdao