“卡嗒声”用英语怎么说？

他们的鹤嘴锄发出来的卡嗒卡嗒声使我从沉思中清醒过来.The rattle of their picks was what woke me from my musing.警车里的无线电带着卡嗒声发出了这个通知.The message crackles over the radio in the police car....