And they don't ask a married couple with no children Why don't you have any children?.
他们也不会问结了婚没有孩子的夫妇“你们为什么不要孩子?”。
The computer will still be unable to predict whether Princeton,New Jersey, will have sun or rain on a day one month away.
计算机无法推断出1个月以后的某一天,新泽西州的普林斯顿究竟是晴天还是雨天。