在深圳市龙岗区妇幼保健院，一大早就有数十位怀孕十二周左右的准妈妈在等待接受一项重要的检查。
In a Maternal and Child Health Hospital in Longgang District, Shenzhen City, in the early morning, there were dozens of pregnant women who have been pregnant for about twelve weeks waiting for an important test.