Without this basic procedure, it is difficult to achieve good results even if advanced detection methods are adopted.

缺少了这个基础环节，采用任何超前探测方法都很难取得好的效果。

youdao

Without this basic procedure, it is difficult to achieve good results even if advanced detection methods are adopted.

缺少了这个基础环节，采用任何超前探测方法都很难取得好的效果。

youdao