机舱中有许多管件，像燃油系列，冷却系列，滑油系列，消防系列，怎样识别它们？

There are many piping systems in the engine room such as fuel oil system, cooling system, lubricating system, fire system, fighting system. How do you identify them?

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本周三，这场野火已经烧毁了数十栋房屋，消防队员在于野火的斗争中遇到了一系列的响尾蛇，倒塌的电线和易燃丙烷储罐。

Firefighters encountered a tangle of rattlesnakes, downed power lines and combustible propane tanks Wednesday as they struggled to get an upper hand on a wildfire that has destroyed dozens of homes.

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震后迅速赶往灾区实施一系列救援行动的英国消防队员们将于今天下午回到国内。

UK firefighters, who flew out soon after the disaster to help the search and rescue effort, are returning home this afternoon.

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