Dulla杜拉
dulladj.呆滞的;钝的;迟钝的;无趣的;暗的v.变钝;迟钝
dull colony notation平板菌落计数法
dull of understanding理解迟钝
Dull or unadventurous沉闷的;无奇的
dull-finished sheet毛面钢板,无光薄板
dull emitting cathode微热发射阴极
dull to the nth degree极为枯燥
dull flat viscose yarn无光粘胶扁丝
Dull-mantled Antbirdn.暗背蚁鸟
dull / dql/ a.枯燥的;
dull market conditions市面冷淡