“困难的”的英语？

任何导致呼吸出现困难的锻炼都应停止。Any exercise that causes undue shortness of breath should be stopped.这将让我们陷入非常困难的经济窘境。This will put us in a very difficult economic fix.有些事给了我克服困难的勇气。Something gave me the strength to overcome the diffi...