I think once the second son is born there will be a three or four year period before the third child.

我想一旦第二个儿子出生，那么第三个孩子就要等到3或4年后才会有。

youdao

I think once the second son is born there will be a three or four year period before the third child.

我想一旦第二个儿子出生，那么第三个孩子就要等到3或4年后才会有。

youdao