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- EWMA is simple in calculation and easy to be pot into practice, but it may conduct an underestimation of the market risk due to the inaccurate decay factor in the model. EWMA方法简单并且易于操作，但是采用固定的衰减因子可能造成对风险的错误估计，导致对于市场风险估计不足；
- What made the Roman Empire decay? 罗马帝国为何衰亡？
- Old civilization may fall into decay. 古老的文化可能会渐渐衰落下去。
- The empty house has fallen into decay. 那座空房已成一片颓垣。
- The tree exhibited signs of decay. 那棵树显示腐蛀的迹象。
- His mental decay is distressing. 他的智力衰退令人苦恼。
- Growth and decay are vital processes. 生长和衰亡是生命过程。
- The dentist could detect no decay in her teeth. 牙医检查了她的牙，未见有龋齿。
- That's a factor which we must not neglect. 这是我们不应忽视的一个因素。
- Cavities in teeth are caused by decay. 牙齿的蛀洞是由蛀蚀造成的。
- I factor ed my uncle's estate for three years. 我代管我叔父的财产已有三年了。
- Human remains, especially after cremation or decay. 骨灰人的遗骸，尤指在火化或腐烂后
- His experience in social work is a plus factor. 他在社会福利工作方面的经验是一个有利因素。
- A source of spreading corruption or decay. 腐败的原因传布腐败或腐朽的根源
- Breakdown or decay of organic materials. 腐烂; 分解指有机物的分解或腐败
- In truth, moral decay hastened the decline of the Roman Empire. 事实上，道德沦丧加速了罗马帝国的衰亡。
- The deciding factor; the deciding vote. 决定性的因素; 决定性的一票
- The castle has fallen into decay in the last100 years. 这座古堡在近100年里渐渐荒废了。
- The determinate factor of our economy is to control inflation. 我们经济的决定性因素是控制通货膨胀。
- An unknown or unnamed factor, thing, or person. 未知之(人)物，不知道的或未命名的因素、物体或人
