It had been evening the last time Harry had travelled by Knight Bus and its three decks had been full of brass bedsteads.

哈利上次乘骑士公共汽车是晚上，三层车厢里排满了铜床架。

Harry glanced up at the three decks of the Knight Bus and saw all the passengers staring down at them, noses flat against the windows.

哈利望了一眼三层的骑士公共汽车，见所有乘客都把鼻子贴在窗子上看着他们。

16 Build a roof for it and put in a window eighteen inches from the top; put in a door on the side of the ship; and make three decks, lower, middle, and upper.

16 方舟上边要留透光处，高一肘。方舟的门要开在旁边。方舟要分上、中、下三层。