他用暗淡无神的蓝眼睛盯着我看。He stared at me out of those washed-out blue eyes.给孩子们用的墙纸往往颜色苍白暗淡。Wallpapers for children too often come only in sickly pastel shades.她比较胖，脸色暗淡、多斑。She was rather fat, and her complexion was muddy and spot...
The optimal systems differ according to the criterion chosen.按照所用准则之不同,最佳化系统便不同.The optimal conditions for the anaerobic digestion are the following.厌气消化的最佳条件如下.It is designed only to maintain minimum standards, not to a...