A device used on a sand line in the tubing of an oil well to scrape the wax off the tubing.
用捞砂绳下入油井的油管中以刮去油管壁上的结蜡所用的装置。
She traced a line in the sand.
她在沙地上画了一条线。
But the lodging industry must wake up, draw a line in the sand and figure out a way to put the beast back in the cage.
不过,酒店行业必须醒悟了,要明确表明自己的立场,而且想办法把在线旅行社这只野兽关回笼子里面去。
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