to do something secretly or deceitfully against someone
偷偷或欺骗性地做某事，反对某人
"She went behind my back and told the manager everything."
"她在我背后告诉经理一切。"
The most important part of the economy.
to settle and become established somewhere
to make yourself feel brave enough to do something
to become happier or more cheerful
To be willing to consider new ideas or opinions.
to be noticeably different or better than others
