emitting
n. 发出，散发；发射
v. 散发；喷出（emit 的现在分词）
例句
These light-emitting diodes could simulate red light.
这些发光二极管可以模拟红光。
To test their hypothesis, researchers took some electrical lights, actually, they were light-emitting diodes.
为了验证他们的假设，研究人员使用了一些电灯，实际是使用了发光二极管。
The Trilobite scuttles around homes emitting ultrasound signals to create maps of rooms, which are remembered for future cleaning.
三叶虫在房屋周围飞来飞去，发出超声波信号，绘制出房间的地图，以备日后清洁时使用。
