Voice 1: Many people already know the risks adults take when they choose to smoke. Dangers from smoking include poor general health, lung problems, cancers, heart disease, and many other problems. But many people do not know the dangers of smoking for an unborn baby.
声音1：许多人已经知道成年人吸烟的风险-=_~n9.pz(BWJB(1@。吸烟的危害包括健康状况不佳、肺部问题、癌症、心脏病和许多其他问题M.4Q;XcQhB@)dX。但许多人不知道吸烟对未出生婴儿的危害7D0eCyOr)q]qf]0LD9O。
Voice 2: A pregnant mother and her unborn baby are connected. A temporary organ called the placenta connects them. The placenta takes important substances like food and oxygen from the mother's blood. It passes these substances to the baby. It also takes waste substances from the baby back into the mother. The placenta can take out some harmful substances before they reach the baby. But it cannot take out all of them.
声音2：孕妇和她未出生的婴儿是相连的7snXJYGy_jk。名为胎盘的临时器官将他们连接起来Wtdf!!GR9x,np8(#gD+n。胎盘从母亲的血液中摄取食物和氧气等重要物质g1u=G#*Z4&Cw.Re!e&)。然后将这些物质传递给婴儿^c]+2V0FOwq^xV~+。胎盘还会将婴儿体内的废物带回母亲体内NSJAb|z@ag;;7J@。胎盘能在有害物质到达婴儿之前将其排出体外BVlc^~!i7MP@。但不能将所有有害物质都排掉Jn|h&ws@&b+40。

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