2019学年度人教版选修八Unit3Inventors and inventionsPeriod2Language points课件(30张)
2019学年度人教版选修八Unit3Inventors and inventionsPeriod2Language points课件(30张)第5页

beaten track踏平的路;一贯走的路;惯例 e.g. We followed __________________ through the forest. 我们沿着一条人们踏出来的路穿过 森林。

a well-beaten track