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Miscarriage流产

The term means a spontaneous ending of a pregnancy by loss of the baby before the 24th week of pregnancy.这个词意味着一种自发的结束怀孕所损失的婴儿之前，第二十四周妊娠。

Approximately one pregnancy in four ends in miscarriage, most of these occurring in the first 12 weeks of pregnancy.大约一怀孕4个完，在流产，大部分这些发生在头12周妊娠。 In some of these cases, the woman concerned is never aware that she is pregnant, she may have a rather late, and perhaps unusually severe period or not miss a period at all.在一些这些情况下，该名女子是从来没有知道她是孕妇，她可能有一个较迟，或许异常严峻的时期，或不要错过一个时期在所有。