look down: 俯視
Some hong kongers used to look down on mainlanders as poor cousins.
一些香港人曾經看不起大陸人，把他們視為貧窮的堂兄弟。
Did the snobs there look down on you, too?
那里的勢利鬼也瞧你不起了吧?

in keeping with: 與…一致
Many of the plan's targets are in keeping with existing trends.
這項規劃的許多目標是要保持當前的趨勢。
In keeping with the republican orthodoxy, he eschews all talk of tax increases.
為了與黨內人員保持一致，他盡量避免與增稅有關的話題。

stuff up: 填塞
But it's not like reporters make this stuff up.
但這并不是記者們憑空瞎編。
Stuff up your ears, there is going to be a mighty bang!
趕快把耳朵捂起來，馬上就要有砰地一聲大響！