1. WHO says environmental hazards can cause __9__, still birth, low birth weight and birth defects. 世卫组织称环境危害可能导致流产，死胎，出生体重不足，婴儿先天性缺陷。
2. WHO says environmental hazards can cause miscarriage, still birth, low birth weight and birth defects. WHO表示环境危害可能导致流产、死胎、出生体重不足和婴儿先天性缺陷。
3. WHO says environmental hazards can cause miscarriage, still birth, low birth weight and birth defects. WHO说环境危害可以导致流产、难产、新生儿低重及新生儿缺陷。
4. The contents of right of birth cover the right of birth or abortion, and the knowledge of planned birth. 生育权的内容包括了计划生育权、堕胎权以及获得计划生育知识、方法和教育权。
5. Animals know their birth place, and egg-laying place, and can find the old nest from far place, such as salmon, turtle, swallow and seabird. 鲑鱼、乌龟、燕子、海鸟，牠们都能准确地知道其出生地，产卵地，从千里外也能准确地找到旧巢。
