Over geologic time the central volcano becomes extinct, followed by erosion and subsidence beneath the sea surface, leaving the coral reefs as a ring around (or cap on) the submerged island remnant.

由于侵蚀和海底的下沉，经过地质时代的变迁，中心的火山已经不见踪影，而只留下珊瑚礁环绕或覆盖在沉入海底的火山岛上。

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Add the desired colour code 1 Add the mechanically coding number C1 - C6. Standard coding C1 2 Please order coloured ring separately. 3 or with protective cap in unmated condition.

添加需要的颜色代码1添加需要的编码C1 - C6。标准编码C1 2请单独订购色环。3或在未插合条件下带保护盖。

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A threaded neck ring is secured to the tapered end of the cylinder to allow a protective cylinder cap to be installed.

车有螺纹的颈环固定在钢瓶的锥形端，可以安装保护性瓶帽。

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City Hall proposed that families with children living in these areas be exempt from the housing cap and asked the government to ring-fence most of the Discretionary Housing Payments for London.

BBC: London's homeless families could rise by 5,000