众所周知，在诸如饥荒等压力的环境下，女孩的出生率要比光景好的时候多。
It HAS been known for a while that stressful conditions such as famine result in more girls being born than happens in good times.
众所周知，在诸如饥荒等压力的环境下，女孩的出生率要比光景好的时候多。
It HAS been known for a while that stressful conditions such as famine result in more girls being born than happens in good times.
应用推荐