如果在适当的时间内，男性胎儿没有接收到足够的雄性激素，就会发生两件情况之一。
If the male foetus does not receive enough male hormone at the appropriate time, one of two things may happen.
Y染色体让携带者之所以成为男性，是因为它携带了雄性决定基因。
The Y chromosome makes its owner male because it carries the male-determining gene.
事实是，只要男性胎儿错失足够份量的雄性激素，这种现象就会一直存在。
The reality is that it has been around for as long as male foetuses missed out on their suffi - cient share of male hormones.
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