The stiff skeleton is a steel truss structure, which turns into a single cell and single box section of the main arch structure by filling and outsourcing concrete after swivel construction.

劲性骨架为钢管桁架结构，转体施工，之后，通过内填和外包混凝土构成单箱单室箱形截面的主拱结构。

youdao

Canaries forward Steve Morison knocked David Fox's floated free-kick back into the danger area and Holt showed great strength, composure and awareness to swivel neatly in the six-yard box and shoot into the net via the inside of the far post.

BBC: eng-prem