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This is real, unlike the Joule coefficient which is very small so that most gases have tiny Joule coefficients. So if you do a Joule experiment, you hardly measure a temperature change. With real gases, here you do actually measure it. You can feel it with your finger on your bicycle tire.
系数那样小以至于,大多数气体的焦耳系数,都很小，所以如果你做焦耳实验,很难测量出温度的变化,对于真实气体，你可以测量它，你能通过手指按在,自行车轮胎上来感觉到它。
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There's one on my way to work and it goes up to 34th, but then it stops.
在我上班的路上就有一条自行车道，但是它到第34大街就没有了。
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There got a lot of good like walking or biking or hiking trails around.
在那里可以散步、骑自行车或者健行。
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Yeah. There's more, I mean even around here, you see there's new bike lanes.
哦，当然，有很多这种设施。甚至就在这周围，你看，这里有新修的自行车道。
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but I do bike in the bike lanes on First Avenue.
不过我会在第一大街的自行车道上骑车。
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I wouldn't necessarily ride my bike in the park at night,
我从来不在晚上骑自行车去公园，
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Is it safe to cycle on the streets of London?
在伦敦的街上骑自行车安全吗？
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People jog and bike up and down there.
人们在那儿来来回回地慢跑、骑自行车。
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