1. Failure is man's inability to reach his goals in life. 失败就是一个人没有能力达成他的人生目标。
2. The inability of two bodies to occupy the same space at the same time. '不可'。''入''。'性'。''两个物体不能在同一时间占据同一个空间。
3. In life, the most pathetic thing is not separation nor death, it is your inability to appreciate what you have. 人生最可怜的事，不是生离死别，而是…当面对自己所拥有的，自己却不知道它的珍贵。
英英解释
n.
1. lack of ability (especially mental ability) to do something
2. lacking the power to perform
