Over the next four years, the levels became more similar, with both components standing between 6 and just over 8 per cent. 這裡standing什麽意思?

stand除了物理動作的"站立/站著"外，英語亦借用意會是"立場"/"維持"，這句的standing就是指"維持在6-8%之間"沒有太大的變動。

To huoooo:-
---The meaning of "standing":-
---established and permanent(adj.) ready for; to be delivered regularly; that recur regularly; that regularly causes; eg:-established between 6%-8%+.

stand：站立 ，standing：站起來，思考方向可朝站起來後會佔據一個區間，所以，standing在句裡大致之意思便為：處於(6% ~ just over 8%之間)。