大同小异的英文：
[Literal Meaning]
largely/same/lightly/different
to be largely identical but with minor differences

[解释]
大体相同，有些差异

[Explanation]
to be largely idenical but with minor differences

[例子]
不要再看了，其实这两种产品大同小异，没有什么本质的不同。

[Example]
Stop looking. Actually the two products are largely identical and there are no essential differences.

The two model ships are largely identical but with minor differences.
这两只舰船模型大同小异。

the disagreeable oneness of roadside landscapes.
大同小异的路旁风景

I think everyday's weather forecast is almost the same.
我觉得每天的天气预报都大同小异。

How many men resemble the nettle!"
世上有多少人就和荨麻大同小异。”