They advance by covering their own tracks.
他们总是自己找辙前进。
But then Mr Putin, as befits a former KGB officer, started covering his tracks.
但是那时的普京先生作为一名经验十足的前克格勃官员，他开始掩盖自己的一切行径。
Behind the wall, Michael pulls the toilet back into position, covering their tracks.
Michael进到墙后，将马桶拉回原位，掩盖他们的踪迹。
Once in, though, the skilled attacker has no difficulty covering tracks.
一旦进入公司，虽然，熟练的攻击者却可以覆盖轨道。
But my last husband, he was a gem. He was a veritable master at covering his tracks.
但是我最后一任丈夫，是个珍品，他是一个名副其实的掩盖痕迹的高手。
SocGen claimed that its rogue trader had been covering his tracks by creating a series of fictitious transactions, using dark arts learned during a spell in middle management.
法兴银行辨称（未能及时发现损失，是因为）这位流氓交易员曾经供职于公司的中后台管理部门，对各种监督程序和技术手段了如指掌。
SocGen claimed that its rogue trader had been covering his tracks by creating a series of fictitious transactions, using dark arts learned during a spell in middle management.
法兴银行辨称（未能及时发现损失，是因为）这位流氓交易员曾经供职于公司的中后台管理部门，对各种监督程序和技术手段了如指掌。
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