1 worry that is caused by having to deal with a problem or work too hard over a long period of time 焦虑; 紧张; C,U
WORRY
焦虑
2 a difficulty or problem that is caused when a person, relationship, organization, or system has too much to do or too many problems to deal with 问题,困难; 负担; 紧张 C,U
DIFFICULTY
困难
3 a situation in which something is being pulled or pushed, or is holding weight, and so might break or become damaged 拉力; 张力; 推力 U
FORCE
力,力量