Terms containing key problem

Subject	English	Chinese
IT	date-in-key problem	关键字日期问题
adv.	key media problem	主要媒介问题
econ.	key problem	主要问题
commer.	key problem	关键问题
sport.	key problems to be tackled	攻关课题
railw.	tackle key problem	攻关
gen.	the key to the problem	问题的关键