Male fetuses were, in other words, being spontaneously aborted-presumably as a consequence of stress.
换句话说，男性胎儿发生自然流产——这可以推测为压力产生的后果。
In Japan, in particular, male fetuses accounted for about two thirds of all fetal deaths in the 1990s.
这种状况在日本尤为突出，上世纪90年代，日本男性胎儿的死亡率占所有胎儿死亡的三分之二。
At present, more than 200 diseases which have been identified are X-linked, these diseases only affect male fetuses.
目前，已有超过200种单基因遗传性疾病被认为是由X染色体连锁遗传引起的，这些疾病只影响男性胎儿。
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