无先例可循 meaning in Chinese

have no precedent go by

Through practice of some years , the system of attorneys presiding in prosecution has got remarkable results , however , because there is no precedent which can be followed , it also shows may problems and defects during enforcement course
经过几年的实践，主诉检察官制度取得了显著成效，但因无先例可循，在实施过程中也暴露出不少的问题和不足之处。
To carry out my dream that came to be only because i m ordinary , in the beginning our business and education teams diligently insisted on our ideals in the face of pressure . it wasn t easy since there was no precedent to follow , and there was no support . there was only doubt and criticism
为了实现我因平凡而有的梦想，在草创之初，吃尽苦头，无先例可循的情况之下，又无奥援，只有质疑与批评的情况，我们整个经营团队与教学团队忍受最大的压力，孜孜不倦地为著我们的理念而奋斗。