Support your argument by quotation.是什么意思？

Support your argument by quotation.

引用他人的话来证明你的论点。

support

vt. 支持，帮助，支撑，维持；n. 支撑，支持者，[数学]支集，支撑物；

例句
...the Cunard Princess, which acted as a support ship for American forces.
用作美军支援船的公主号冠达邮轮

your

pron. 你的，你们的，尊，玉，乃；

例句
I think there's something a little peculiar about the results of your test.
我认为你的化验结果有点不对劲。

argument

n. 争论，争吵，论据，[数]幅角，主题，情节；

例句
That argument apart, it is for the Germans themselves to work out how their forces should come together.
撇开那场纷争不谈，德国人自己也应该考虑一下如何将各种力量拧成一股绳。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

quotation

n. 引用，引证，[商业]行情，行市，行市表，估价单，引用语；

例句
The second quotation is from an essay that D H Lawrence wrote in the nineteen-twenties.
第二段引文出自D. H. 劳伦斯20世纪20年代写的一篇文章。