Don't try to tie me down with those conventions.

别想用那些规矩绊住我。

　　动词词组tie down，意思是“系住, 拴住, 束缚，限制”，即“constrain, confine, or limit”。

　　名词convention在这句中的意思相当于custom，即“习俗，惯例，社会规范”，英文的解释是“A practice or procedure widely observed in a group, especially to facilitate social interaction”。比如，握手就是一种convention，可以说成是“the convention of shaking hands”