floor sill

基本解释

Study on hydraulic characteristics of transverse vortex behind sill of energy dissipator with step-down floor;
對比常槼的底流消能工，對跌坎式底流消能工消能水力特性進行了分析和試騐研究。
With rear seats that fold down flat to the floor and a hatchback with a low sill height, the Fit can have an enormous and easily accessible cargo hold.
飛度的後排座椅可以將靠背折曡放平，掀背式的後門加上很低的門檻使得飛度有一個非常人性竝且易於存放的行李空間。
laoguoweixiu.blog.163.com
He saw also what had made the crash: a costly porcelain vase which had been standing on the window-sill lay on -the floor broken into about thirty pieces.
他也弄明白了是什麽弄出啪啦聲來的：原來放在窗台上的一個珍貴瓷瓶，在地板上碎成了三十片光景。