美国有550个供大型商务航班起降的机场，并有约10000个供小型飞机起降的机场。

America has 550 airports that can handle big commercial airliners, and perhaps 10,000 that can handle smaller planes.

youdao

美国有550个供大型商务航班起降的机场，并有约10000个供小型飞机起降的机场。

America has 550 airports that can handle big commercial airliners, and perhaps 10, 000 that can handle smaller planes.

youdao

目前，火山灰仅导致一些短距离的国内航班延迟；大型飞机可以在火山灰云上方正常飞行。

So far, the ash has only deferred some small domestic flights; larger planes are able to fly over the cloud.

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