to do something secretly without their knowledge
在他们不知道的情况下做某事 (zai tamen bù zhīdao de qíngkuàng xià zuò mǒu shì)
"She was talking about me behind my back."
"她在我背后说我的坏话。" (Tā zài **wǒ bèihòu** shuō wǒ de huàihuà.)
a well-established and financially sound company
secretly or without public knowledge
to delay or reduce doing something
to take control or responsibility
a person who is considered a disgrace to a group or family
to do what one has promised to do
