on purpose

1.I don't think he stepped on your toes on purpose.

我是有意伤害你的感情。

2.Based on purpose of training in the undergraduate college of applied type and characters of the survey course,this article discussed necessary and imminency of innovation of survey practice.

从应用型本科院校的养目标和工程测课的特点出发,探讨了测改革的必要性、迫切性,提出了对于改革的一些观点,并付诸于教学践当中,取得了很好的效果。