And they compute that not by looking at the obvious things, like, she's buying a crib or baby clothes, but things like, she bought more vitamins than she normally had, or she bought a handbag that's big enough to hold diapers.
他们计算出的结果 不单单是基于一些显而易见的事情， 比如说，她准备买个婴儿床或孩子的衣服， 更是基于其他一些事情， 例如她比平时多买了维他命， 或她买了一个新的手提包 大得可以放尿布。