gravida 英 ['grævɪdə] 美 ['grævɪdə] n.孕妇例句：Objective: To discuss effect of screening and diagnosis of abnormality of infantand fetus in gravida and puerpera as well as effect of population intervention.目的：探讨在孕产妇中筛查、诊断胎儿与婴儿异常和群体干预的效果。
Passenger 乘客旅客passenger 英[ˈpæsɪndʒə(r)] 美[ˈpæsəndʒɚ]n. 乘客，旅客; 行人，过路人; 碍手碍脚的人;[网络] 乘客; 客; 旅客;[例句]Mr Fullemann was a passenger in the car when it crashed.出车祸时，福勒曼先生正在那辆车上。[其他] 复数：passengers 形近词： messenger
