单词	signal ground{=sg}
释义	signal ground{=SG}接地信号
随便看	fighting words fight it out fight it out on this line fight like a lion fight like a tiger fight like cat and dog fight like cats and dogs fight like kilkenny cats fight off fight-off fight on fight one's battle over again fight one's battle (s) over again fight one's battle s over again fight one's battle(s) over again fight one's battles over again fight one's way fight one's way back fight one's way back (to) fight one's way back to fight or fight reaction fight-or-flight fight or flight response fight-or-flight response fight out