在美國(guó)，胎兒先天缺陷的幾率為33分之1。
While birth dffects can be genetic, or inherited, some can be caused by things a woman does before or during pregnancy such as using alcohol or tobacco,
先天缺陷有可能是基因造成，也有可能是先天遺傳造成，女性在懷孕期間抽煙或飲酒，
having uncontrolled diabetes, taking certain medications or being obese at the beginning of pregnancy.
患有糖尿病，肥胖癥，或是在懷孕早期服用某種特定藥物，這些都會(huì)造成胎兒先天缺陷。
Women can greatly improve their chances of giving birth to a healthy baby by consuming 400mg of the B Vitamin, folic acid every day before and during pregnancy;
在懷孕前后，每天服用400毫克葉酸會(huì)大大增加女性孕育健康嬰兒的幾率;
maintaining a healthy weight, controlling diabetes and abstaining from alcohol and tobacco during pregnancy.
在懷孕期間保持健康體重，控制糖尿病，忌煙忌酒。
1.birth defect 天生缺陷
例句：Onstage, Mellencamp said he was lucky to be there, and he shared the story of having to undergo lifesaving surgery for a spinal birth defect at the age of six weeks.
在舞臺(tái)上，梅倫坎說(shuō)他對(duì)自己能夠入選感到榮幸，他然后講述了自己出生六個(gè)星期后因天生脊柱缺陷而不得不做手術(shù)的經(jīng)歷。
2.such as 諸如
例句：Heroes such as Huang Jiguang will always live in the hearts of the people.
像黃繼光這樣的英雄人物， 將永遠(yuǎn)活在人民的心里。
