Search engine to stop this practice, so this practice is called black hat.
搜索引擎要制止这个做法，所以这个做法就被称为黑帽。
Black oil was oozing out of the engine.
发动机渗出了黑油。
It took about a month to create the Black 5 engine.
总共花了大概一个月来创建Black5引擎。
The roar of the engine cuts through the black hot south China air.
对通过中国南方黑热空气的发动机轰鸣声削减。
And some parts are painted black to avoid the dust from the engine jets.
机身部分喷涂黑色，以防发动机排气染污。
Black oil was ozzing out of a crack in the engine casing.
黑色的油正从发动机壳的缝隙中慢慢渗出。
Black oil was ozzing out of a crack in the engine casing.
黑色的油正从发动机壳的缝隙中慢慢渗出。
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