a variation in the strength of received radio signals due to variations in the conditions of the transmission medium 信号时强时弱
noun [具体名词] 褪色；衰退；凋谢；（信号）时强时弱
Clouds spread across the moon, fading it out. 云朵飘过月亮，逐渐把它隐没。
verb [vt. 及物动词] 逐渐消失；使衰落；褪色；（鲜花）枯萎；（赛马）落后；淡入；（非正式）接受打赌（fade 的现在分词）
Hopes for the missing men are fading. 找到失踪人员的希望逐渐渺茫。
