而且关于其父的影响力这一点，我们可以得到加倍的确认，因为认识奥巴马的人可以证实。
And we can be doubly sure about his father's influence because those who know Obama well testify to it.
Attribute确认器会证实单个的属性会设置为一个有效的值，长度，格式，或者数据类型。
Attribute validators verify that a single attribute is set to a valid value, length, format, or data type.
要让这颗行星的状态从“候选”到“证实”，“开普勒”小组必须确认三次“行星凌日”的过程。
The Kepler team had to wait for three passes of the planet before upping its status from "candidate" to "confirmed".
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