Doua杜瓦
dov.做;干n.注意事项;<非正式>聚会;<古>事情
Do you want a cup?
do someone an ill turn做有损于某人的事,危害某人,使某人吃亏
do more harm than good弊大于利
Do not block the trail别阻塞道路
Doyne's guttate iritis
dosimetric measurement剂量测量
doppler beat frequency多普勒拍频
Doppler uhrasonography多谱勒超声
do everything they can竭尽全力
do favor to each other交相利