在板球中, 投球违例要失一分.In cricket, a no ball reckons as one run.轮到某人击球, 如在棒球和板球中.Taking one's turn to bat, as in baseball or cricket.板球中的投球很需要技巧.Bowling in cricket takes much skill....
However, the modulation - demodulation of ultraviolet and voice transmission are the key technologies.然而, 紫外光通信的 调制解调技术 以及语音传输是整个系统的关键难点.Introduce and analyze the key module of demodulation technologies, for example NCO ...