流产一般由妨碍婴儿继续发育的遗传问题引起。
Miscarriages are generally caused by genetic problems with the baby that prevent it from developing.
它以空前的方法，提高了那些对于企业精神没有严重妨碍的国邦的一般人民的生活水准。
It has, in an unprecedented way, raised the standard of living of the average man in those nations that did not too severely impede the acquisitive spirit of enterprising individuals.
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