to worry a lot about something
为某事过度担心 (wei mǒu shì guòdù dānxīn)
"Don’t lose sleep over minor issues."
"不要为小事失眠。" (bu yao wei xiao shi shi mian)
old-fashioned or not keeping up with modern ideas
to reassure someone that they can handle a situation
to settle and become established somewhere
to test a product before official release
an unpredictable person who may cause problems
to be very brave and bold
