分娩与生产相对应，期与时间相对应。

美籍华人（打一卫生巾品牌）

how many months have 28 days?

伐木累（猜一英语单词）

谜语提示：

when columbus discovered america，where did he stand?

Because 7 8 9(seven ate nine)因为7吃了9

why can you tell clocks are shy?

停止想象就ok了

Why is six afraid of seven?