On top of that, a really strong defence-line has been built up in front of every single key point south of Tsinan.

而且济南以下，节节军事重要地点都建筑了很坚固的防御工程。

youdao

On top of that, a really strong defence-line has been built up in front of every single key point south of Tsinan.

而且济南以下，节节军事重要地点都建筑了很坚固的防御工程。

youdao