但其它的研究表明，父母生育年纪较大，出生体重较低，多胎妊娠以及准妈妈在怀孕期间的任何药物治疗或者感染等，这些都与自闭症的形成有关。
But other research has implicated increasing maternal and paternal age, low birth weight, multiple pregnancies and any medications or infections to which an expectant mom is exposed during pregnancy.
年轻人通常是单胎出生，多胎诞生是例外，而且在所有的行星上家庭生活是完全一致的。
Young are usually born singly multiple births being the exception and the family life is fairly uniform on all types of planets.
流产率，已启动的周期活胎出生率或多胎妊娠率的变化。
Change in the miscarriage rate, live birth rate per cycle started, or the multiple pregnancy rate.
结果：560例脑瘫的致病因素按发生频度，排在前6位的分别是早产、低出生体重、窒息、母亲因素、多胎、黄疸。
Results: According to incidence, the six leading risk factors in the 560 cases were premature birth, low weight at birth, suffocation, mother, multi fetus, and icterus.
年轻人通常是单胎出生，多胎诞生是例外，而且在所有的行星上家庭生活是完全一致的。
Young are usually born singly, multiple births being the exception, and the family life is fairly uniform on all types of planets.
本次调查低出生体重率的危险因素有多胎、多产次、孕周不足、高海拔、低国民生产总值及妇女贫血等。
The riskfactors of LBW rate included multiple fetus, multiple parturition, inadequate duration of pregnancy, high altitude, low GNP and maternal anemia, et al.
多胎妊娠早产风险高，胎儿可能出生过早而夭折。
The risk of premature delivery in multiple pregnancies is high, and babies may be born too early to survive.
最常见的多胎是双胞胎，两个婴儿同时出生。
The most common multiple births are twins, two babies born at the same time.
最常见的多胎是双胞胎，两个婴儿同时出生。
The most common multiple births are twins, two babies born at the same time.
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