我们全然不知，因为大脑把它认为属于图像的东西填进去了，所以图像对我们来说总是表现出完整的。

We aren't aware of it, because the brain fills in what it thinks belongs in the image, so the picture always appears complete to us.

youdao

电脑会把针对不同网站的多个用户名及密码存储起来，指纹扫描装置校验了用户的身份后，电脑马上自动把用户名、密码填进去。

Multiple user names and passwords for different websites are stored by the computer, which fills them in automatically once the user's identity has been verified with a finger-scan.

youdao

So, let's go back to the notes, and let's fill these in, seven electrons. Another way you could have known them was to look at Lewis' notes here, where if look at this box carefully you see there are seven dots around the cube, so there are his seven valence electrons.

那么，让我们回到讲义，把它们填进去，七个电子，还有另外一种方法可以知道这些,那就是看看路易斯的讲义这里，大家可以看到这个立方体周围有七个点,因此有七个价电子。

麻省理工公开课 - 化学原理课程节选