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He was suddenly caught in the full beam of a searchlight.

他突然被探照灯照中而暴露无遗.

Like the searchlight beam, the radio beam cannot be made very sharp; it tends to spread. Photometric characteristics of motorcycle headlamps equipped with filament light sources

无线电射束也象探照灯的光束一样，是不能高度集中的；它总要散开。GB5948-1998摩托车白炽丝光源前照灯配光性能

we shone the searchlight beam at the crossroads.

我们把探照灯的灯光对准了那个十字路口。

Like the searchlight beam, the radio beam cannot be made very sharp; it tends to spread.

无线电射束也象探照灯的光束一样, 是不能高度集中的; 它总要散开.

The beam of the searchlight pierced the darkness.

探照灯的光柱射入黑暗中.