Sen[
sen]
n. 传感器(传感元件,探测设备)
sen[ noun ]a fractional monetary unit of Japan and Indonesia and Cambodia; equal to one hundredth of a yen or rupiah or riel<noun.quantity> 
Sen \Sen\, n.
A Japanese coin, worth about one half of a cent.
Sen \Sen\, adv., prep., & conj. [See {Since}.]
Since. [Obs.]