Ring is one of the most ancient jewelry and one of the way to express yourself.
戒指，既是最古老的首饰之一，也是一种人们表达自己的方式。
2
The area will be bounded by a ring-shaped bypass and have an internal one-way traffic system running in opposite directions.
这个区域将被一个环型的小道包围和有一个内部的单行交通系统在它相反的方向运作。
3
Thoroughly clean all parts exposed to material, including piston barrel, piston head, O-ring, one-way valve, filling head, feeding tank, hopper, etc. Damaged seal shall be immediately replaced.