Backdoors
adj. 后门的；秘密的；欺诈的；鬼鬼祟祟的，偷偷摸摸的；不正当的
🗣️ 情景例句
It's my fault. I really feel bad about it.
是我的错。 我真的感到很难过。
Insecticides destroy many harmful bugs.
杀虫剂能驱除许多害虫。
Neither of the men spoke.
两个人都没说过话。