Evans could swing his little sixteen-inch telescope around like a tail gunner in a dogfight, spending no more than a couple of seconds on any particular point in the sky.

埃文斯可以像近距离空战中的机尾射手那样把5厘米小型望远镜转来转去，用几秒钟时间就可以瞄准天空中任何一个特定的点。