fade away 逐渐消失；逐渐变暗；逐渐模糊看不见；病重死亡

【例句】
Friendships may fade away in a short time.
友谊也可能在短期内消失。

In the last week of her life, she simply faded away.
在生命的最后一个星期里，她渐渐油尽灯枯。