to hide evidence of one’s actions
隐藏一个人行为的证据 (yǐnɡɡài yīgè rén xíngwéi de zhèngjù)
"Hackers often cover their tracks after breaking into systems."
"黑客在进入系统后常常掩盖他们的痕迹。" (Hēikè zài jìnrù xìtǒnɡ hòu chánɡchán **yǐnɡɡài tāmen de hénjì**.)
to perform well in a difficult situation
Officially stated and reportable
to fail to keep up with a schedule or progress
to feel sad or depressed
referring to systems or applications that use artificial int...
too surprising or shocking to believe
