刀架：有两层滑板(中、小滑板)、床鞍与刀架体共同组成。

Knife: there are two layer slide (medium and small skateboarding), bed saddle and knife body together.

youdao

刀架：有两层滑板(中、小滑板)、床鞍与刀架体共同组成。

Knife: there are two layer slide (medium and small skateboarding), bed saddle and knife body together.

youdao