... track events n. [体]径赛 track fading 径迹褪化 track fastenings 轨道联接扣件 ...
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track fading effect 径迹衰退效应
track fading
跟踪衰落
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Firefighter emergency beepers, the ones they wear to keep track of each other inside burning buildings, are slowly fading as batteries run out.
CNN: Cruel calculus: The death toll
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