单词	His watch is fast
释义	His watch is fast. 他的表走得快。
随便看	single currency policy single current single-current single current circuit single current dipole single current-double current converter single-current, double-current repeater single current generator single current key single-current key single current method single current morse key single current sensing single current signalling single-current signalling single current system single-current system single current telegraphy single-current telegraphy single current transmission single-current transmission singlecurrent transmission system single-current transmission system single current working single curvature