The travelling valve of the pump is designed to be closed and opened forcibly, and the pump plunger adopts equal-diameter bare pipe with a floating structure to prevent gas lock and sand sticking.

这种抽油泵柱塞游动阀采用机械强制开启和关闭的结构，柱塞为等径光管、浮动结构，可防止发生气锁游动阀、阀球关闭滞后、砂卡柱塞现象。

youdao

In fact, you must make a conscious effort to create a viable contingency plan instead of sticking your head in the sand or giving it only lip service.

事实上，你需要创造一个有应变能力的计划，而不是像鸵鸟那样，把头埋在沙子里，对外界不管不问，或者只是光说不做，纸上谈兵。

youdao

Individuals, states and our nation must adapt to these new realities, stop sticking our heads in the sand, and work harder and smarter to create our new future.

无论是个人，地方还是我们整个国家，都必须适应这些现实，不能奉行鸵鸟政策，整天把脑袋藏在沙子里，我们要更加努力、更加智慧地创造我们新的未来。

youdao

You're sticking your head in the sand if you're not cautious right now.

CNN: WATCHING WALL STREET

Plaid Cymru education spokesman Simon Thomas accused the Welsh government of sticking its head in the sand about higher education funding.

BBC: Wales

But though they claim to be drawing a line in the sand, the Socialists are really just sticking their heads in it.

ECONOMIST: Chirac shuffles the pack | The