courage是不可数名词。
couragen.勇气;勇敢;无畏;胆量;
courageousadj.勇敢的;无畏的
Her courage and good humour saw her through.
她靠着顽强的勇气和乐观的性格挺了过来。
Her courage seemed to desert her for a moment.
她一时间似乎失去了勇气。
They have a lot of courage.
他们勇气十足。
水利万物而不争,
而万物莫能与之争。