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”