Metal cock ring soft seat surface pressure to the bearing surfaces, such as the valve core and valve seat is concentric ring surface can be a double tight closure.
金属旋塞表面压向阀座环软支座表面，如阀芯和阀座环表面是同心的，就能得到双重严密的关闭。
When the cock met the hen the next day, he was very surprised to see the ring around her neck.
第二天，当公鸡见到母鸡时，它惊讶于看到她脖子上的戒指。
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