A collision between two subway trains in the US capital Washington has killed at least four people.

美国首都华盛顿两辆地铁相撞，已造成至少私人死亡。

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Pickup and drop-off points are usually near transportation hubs, like Pennsylvania Station in New York City, or the Metro Center subway stop in Washington.

旅客上下车的地点通常集中在交通集散地，像纽约市的宾夕法尼亚站，或者华盛顿的地铁中心站。

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When I rode the subway in Washington D. C., I took the escalator to go up to ground level, like I always do in Beijing.

我从华盛顿的地铁车站上来，乘的是在北京已是司空见惯的传送带式电梯。

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It provided accurate directions for Washington's subway.

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Trash cans and recycling bins are being removed from certain areas of Washington's Metro subway system as a safety precaution.

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"If you're within one to two miles of the festivities, just walk, " said Lisa Forestein, a spokesperson for Washington's Metro subway system.

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