单词：descension
declension; degradation.
descension的用法和样例：
例句
- Although the algorithm is lossy, the ear can not feel the quality descension of the encoded audio signal, which means the algorithm is lossless in the perceptual field.所以，尽管该方法是有损的，但人耳感觉不到编码信号质量的下降，在此意义上我们认为编码保证了音质的透明性。
- movement活动
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