They mounted a small rocket on top of a V-2 rocket.
他们在V - 2火箭的上面安装了一个小火箭。
The A-9/A-10 rocket was designed to be 25 meters (82 feet) long, or about 10 meters longer than the V-2.
A-9/A-10火箭有25（82英尺）米长，或比V-2大约长10米，重近100吨。
The A-9/A-10 rocket was designed to be 25 meters (82 feet) long, or about 10 meters longer than the V-2.
A-9/A-10火箭有25（82英尺）米长，或比V-2大约长10米，重近100吨。
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