Inside a Submarine

Inside a Submarine

潜艇内部

It was the navy’s Fleet Week. The bay was full of ships for people to see and visit. Orson stood with his cousin Nick on top of a long black submarine. Nick was a sailor who worked aboard this underwater vessel. “ What does this submarine do?” Orson asked. “ The navy uses submarines to help protect our country, ” Nick said. “ Most of our missions are for military research. Ready to see inside?” Orson shivered. The sub had no windows.

这是海军的舰队周。海湾里停满了船只，供人们参观。 奥森和他的表弟尼克站在一艘长长的黑色潜艇上。 尼克是一名在这艘水下船只上工作的水手。 “这艘潜艇是做什么的？”奥森问道。 “海军使用潜艇来帮助保卫我们的国家，”尼克说。 “我们的大部分使命都是为了军事研究。准备好去看看里面了吗？” 奥森颤抖着。潜水艇没有窗户。

It seemed scary. Nick climbed down the ladder inside the hatch, the round opening that led into the sub. “ Come on down, ” he called. Orson cautiously stepped onto the ladder’s first rung. “ Will the sub sink while we’re on board?” “ Subs control when they submerge, ” Nick assured him as they climbed down the ladder. “ Tanks filled with air help them float.

看起来很吓人。 尼克爬下舱门内的梯子，圆形开口通向潜水艇。“下来吧，”他喊道。 奥森小心翼翼地走上梯子的第一个梯级。 “我们在船上时潜艇会下沉吗？” “潜水艇在潜入水中时会控制，”尼克在他们爬下梯子时向他保证。 “充满空气的水箱帮助它们漂浮。

To submerge, we pump water into the tanks. That makes the sub heavier, so it goes down. ” “ How does it get back up?” “ We fill the tanks with air again to make it float. ” Nick grinned at him. “ We won’t submerge today. ” Orson reached the bottom of the ladder. “ Why is it so cramped in here? The sub looks huge on the outside. ” “ Nuclear subs are big. This one is over ninety meters long, but the power plant and equipment take up most of the space, ” said Nick.

为了潜入水中，我们把水抽到水箱里。 这会使潜水器更重，所以它会下降。” “它是如何恢复的？” “我们再次给水箱充气，让它浮起来。”尼克朝他咧嘴笑了笑。“我们今天不会沉下去。” 奥森到达梯子的底部。 “为什么这里这么狭窄？潜艇外面看起来很大。” 尼克说：“核潜艇很大。这艘潜艇有90多米长，但发电厂和设备占据了大部分空间。”

“ The 135 crew members get any room that’s left. ” He laughed. “ Some subs, like the ones they use for scientific research, are powered with oil. Oil- powered subs must surface every few days. Nuclear subs can stay underwater for months. ” “ Don’t you run out of water and air when the sub stays underwater that long?” “ We make our own fresh water and air. ”

他笑道：“135名全体船员得到了剩余的空间。”。 “有一些潜艇，如用于科学研究的潜艇，是用石油驱动的。 石油动力潜艇必须每隔几天浮出水面。 核潜艇可以在水下停留数月。” “潜水艇在水下停留那么长时间，你不会耗尽水和空气吗？” “我们自己制造淡水和空气。”

“ We made fresh water in school! ” Orson said. “ We boiled salt water and saved the condensed steam. Is that what you do?” “ Exactly, ” said Nick. “ We make enough water for crew members to drink and take a three-minute shower every day. Most of the water, though, is used to cool equipment. ” “ How do you make air?” “ We take oxygen from water. And we can reuse existing air by getting rid of the carbon dioxide people breathe out. ”

“我们在学校里制造了淡水！”奥森说。 “我们煮了盐水，节省了冷凝蒸汽。你就是这样做的吗？” “没错，”尼克说。“我们为船员们准备了足够的水让他们喝，每天淋浴三分钟。 不过，大部分水用于冷却设备。” “你是怎么制造空气的？” “我们从水中提取氧气。我们可以通过去除人们呼出的二氧化碳来重新利用现有的空气。”