table里面cell的排列不懂亞

luofeiyu_cu

For example, if you want a button in the lower-right cell of a 2 x 2 table, and want it to occupy that cell only, then the code looks like the following.

button = Gtk.Button()
table = Gtk.Table(2, 2, True)
table.attach(button, 1, 2, 1, 2)
If, on the other hand, you wanted a widget to take up the entire top row of our 2 x 2 table, you’d use

table.attach(button, 0, 2, 0, 1)

可以看懂這一段英文，但是，不了解原因，可否解釋一下？