The best time to take the train is from 4 to 6 o' clock in the afternoon, because it is cool when people enjoy the countryside view.
坐火车的最佳时间是下午4点到6点,因为那时天气凉爽,人们可以尽情享受乡村景色。
Before the pool bar closes, a jolly crowd of Freeport employees have their beers stored in a cool box. They take it to one of the-mostly dry-seafood restaurants in town.
在游泳池酒吧关闭之前,一群兴高采烈的自由港员工们会将他们的啤酒存在一个凉爽的箱子里,然后带着箱子来到镇上的一家的海鲜餐馆,那些餐馆通常都是禁酒的。
It is common for families to take evening strolls and enjoy the cool night breeze.
常有整家人在晚上到街上去溜达和乘凉。
It expands. You change your constraints on your system, you heat it up some more, then you take the heat source away, and you put it back in contact with the atmosphere. And you cool it a little bit, change the constraints, cool it a little bit more, and heat, and you've got a closed cycle engine.
让它与大气接触冷却,改变约束,使它继续冷却,然后又再次加热,这就是循环热机,我们以前也研究过,更复杂的机器。
So you need first to take the liquid helium and cool it below 53 degrees Kelvin before you can do the Joule-Thomson to cool it even further to make liquid helium.
我们首先需要,把温度江都53k一下,然后利用焦耳-汤姆孙实验,来继续冷却它。
You take your room temperature liquid helium and you cool it with liquid nitrogen to 77 degrees Kelvin, the new, you're not quite there yet 77k unfortunately right? Then you take hydrogen you cool it would liquid nitrogen to 77, then you can use your hydrogen gas.
首先要有常温的氦气,拿液氮把它冷却到77k,那个新来的7,你不坐在那儿,对吧?,然后用液氮把氢气降温到,然后就可以使用这个氢气了,想要用氢气来做焦耳-汤姆孙实验。
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