A gradual decrease in force or loudness.

渐弱力量或音量的逐渐减弱。

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The figure showed a gradual decrease from 1985 to 2005.

从1985年到2005年，该数字呈逐渐下降趋势。

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A longer taper should involve a gradual increase in recovery sessions, along with a gradual decrease in aerobic threshold training.

一个较长期的恢复过程应该包括一个渐进增加的恢复期，以及一个逐步减少的有氧运动。

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According to Jonathan Banks, executive automotive analyst with the NADA Used Car Guide, used-vehicle prices will remain largely at their lofty levels because of looser lending standards, recovery in the housing and construction markets, a gradual decrease in unemployment levels, an increase in supply from booming new-car sales and pent-up consumer demand.

FORBES: Used Car Prices Stay High -- Here's Where To Find The Best Deals

For fiscal 2012, Tyson expects industry production of chicken to incur a slight decrease from the previous fiscal year with the goal of a gradual improvement of market pricing conditions.

FORBES: Tyson Tops Estimates Despite Down Earnings