They take the train to Beijing.

他们坐火车去北京。

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They get off the train to explore a different town, city, or wherever their projects take them.

他们下了火车，去探索不同的城镇、城市，或者他们的项目要去的地方。

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They can produce enough new viruses to train the immune system to kill and remember them, so people only need to take the vaccine once.

它们可以产生足够多的新病毒来训练免疫系统杀死并记住它们，所以人们只需要接种一次疫苗。

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And, at the very beginning there was a train that went around the Wall of Paris, more about the walls of Paris another time, that's fun to talk about, and Parisians would take picnic lunches, and they'd get on the train, and then they'd hear these large explosions and realize that they could get killed by these large explosions.

一开始的时候,有一趟火车,是绕着巴黎城墙行驶的,下次我们多讲讲巴黎的城墙,这挺值得一谈,巴黎人会带着午餐便当,坐上火车,然后他们听见了巨大的爆炸声,突然意识到他们可能会被炸死

耶鲁公开课 - 1871年后的法国课程节选

Sometimes the two intersect: In this studio session, they play Billy Strayhorn's "Take the 'A' Train, " but in an arrangement by the contemporary American composer Paul Chihara.

NPR: Harlem Quartet Takes The 'A' Train In Boston

Once they reach the mountain's base via train, passengers will take one of 17 gondolas up to a ski resort and Olympic competition venues.

WSJ: Menu

In the suit, filed in a court in Washington DC, they allege that DAI and the government "failed to take adequate measures" to train and protect Mr Gross during his travels to Cuba.

BBC: Alan Gross sues US over detention in Cuba