The current law, passed in 1967, permitted abortion only until a fetus was "viable", which was assumed to be at 28 weeks.
现行的相关法律颁布于1967年，规定只有在胎儿能成型存活，相当于28周孕期以后才可以终止妊娠。
To cause the expulsion of(an embryo or fetus)before it is viable.
胚胎学：研究胚胎和胎儿的形成和发育的学科。
To cause the expulsion of(an embryo or fetus)before it is viable.
胚胎学：研究胚胎和胎儿的形成和发育的学科。
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