darkenv.变暗;使阴郁;使变暗
Darken equation达尔肯方程
darkening of oil油品变暗
darken the colour加深颜色
darkening of urine尿色变暗
darkened canned food黑变罐头食品
darkening wavelength变暗波长
darken someone's door养阴益肾
darken sb.'s daylight以补充点为基准的订货方式
darken someone's doorway登门拜访
darkening toward the limb临边昏暗