说三道四的英文：
[Literal Meaning]
say/three/say/four
to comment at random

[解释]
道：说。乱加评论、批评。

[Explanation]
to make carping comments on somebody or something

[例子]
既然人家两口子已经决定不要小孩了，你就不要再说三道四了。

[Example]
Since the couple decided not to have a kid, you should not make carding comments.

[英文等价词]
to make carding comments
to make irresponsible remarks

Don't make irresponsible remarks!
不要说三道四。