供热系统开口运行，安全系数高。

Heating system runs Opening, high safety factor.

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虽然谷歌的系统是一种进步，但它也为“垃圾链接”这种专门用于欺骗系统的弊端提供了开口。

But although Google's system was an improvement, it too was open to abuse from "link spam", created only to dupe the system.

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钻塔：主起吊绞车和升降机系统可通过船底72英尺宽的开口，提升1,250吨重的管道和机械。

Derrick: the main hoist winch and a system of elevators lifts 1,250 tons of pipes and machinery through the 72.

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