变得费劲的英文

• stiffen

• 费劲:    need or use great effort; be ...
• 费劲:    need or use great effort; be strenuous 他学英语不太费劲。 he studies english without difficulty. 把这件工作做好费了多大的劲啊! what an effort it was to get the work done
• 变得:    became; become -get grow turn; got; you would get much more fat if you kept on eating so much
• 白费劲:    chase 1
• 别费劲:    why bother