If pole and take a long plunger with the use of each other, can constitute arbitrary high degree of scaffolding.

若将立杆和顶杆相互配合接长使用，就可构成任意高度的脚手架。

youdao

If pole and take a long plunger with the use of each other, can constitute arbitrary high degree of scaffolding.

若将立杆和顶杆相互配合接长使用，就可构成任意高度的脚手架。

youdao