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?”。
In our won solar system, for example, Venus is far too hot and Mars is far too cold to support life.
举例来说,在我们的太阳系里,对于生命来说,金星的温度太高,而火星的温度则太低。