1. The antenna has a narrow beamwidth, allowing for precise targeting of signals.
这个天线具有较窄的波束宽度，可以精确地定位信号。
2. The beamwidth of the flashlight can be adjusted to provide a wider or narrower field of illumination.
手电筒的光束宽度可以调节，从而提供更宽或更窄的照明范围。