signal light造句

1、The relations between the gain and signal light intensity and pump light intensity are analyzed.
就增益随信号光及泵浦光光强的变化作了分析。

2、A red signal light zoomed to the sky.
一枚红色信号腾空升起。

3、Stop when the signal light is red.
信号灯是红色时就停下来。