词汇	He failed to come
释义	He failed to come 他未能来。
随便看	power sound spectrum power source Power Source,Bioelectric power source, built-in power source bus power source changeover power source characteristic power source circuit Power Source Constant Voltage power source construction power source control power source controller power source design power source developing plan power source development power source energy saving power source expansion planning Power source for indication lamp power source for peaking power source for peak regulation Power source for relay control power source for switch control power source for switch indication power source for switch operation power source for tietamper