看不起的英文：
look down upon
despise

参考例句：

As a bel esprit he despised pedantry whether in a man or in a bluestocking.
作为一个才子,他看不起卖弄学问的作风,不管这种作风是由男人还是女才子所表现出来的。

think meanly of
藐视,看不起

They affected to despise her.
他们假装看不起她。

The lazybones are always held in contempt
懒汉总叫人看不起。

He was contemptuous of private farmers.
他看不起私营农场主。

"humph!" he shrugged. "These bourgeois make me sick with their `money'!"
“我——我就看不起资产阶级的黄金！”

Usually people don't respect those who are too compliant.
一般来说人们看不起那种唯命是从，唯唯诺诺的人。

You shouldn't look down upon him because he is poor.
你不应该因为一个人穷就看不起他。

Even those poorly educated are proud and look down upon others.
甚至连教养差的人也看不起别人。

On the contrary, if you are weak, they will look down upon you.
反倒是你软了人家看不起你。

look是什么意思：
v. 看，瞧，看起来，寻找
n. 看，查看，外表，容貌
int. 喂，听我说

Look at this gadget.
看看这个小玩艺儿。

Look at that millepede.
看那只千足虫。

While it looks like a truth, it looks like a dream.
它看起来是那么真实，又是那么虚幻。

down是什么意思：
prep. 在…下，沿着
v. 下降，打倒
n. 潦倒；羽绒；丘陵

Down with hegemonism!
打倒霸权主义！

The sun is down.
太阳下山了。

Close down autos and you close down steel and rubber.
关掉了汽车工业你也就关掉了钢铁工业和橡胶工业。

upon是什么意思：
prep. 在...上；紧接着；逼近；根据；走上...；爬上...

He stepped upon the alter.
他走上圣坛。

To bear hard upon;press.
使痛苦不堪对某人施加困难；逼迫

press hard upon
进逼|压迫|穷追