词汇	a letter of endorsement
释义	a letter of endorsement 认可证书
随便看	Secondary-Air-Inter-Solenoid secondary air return secondary airsickness secondary air spray secondary-air supply secondary-air supply aperture secondary-air supply aperture, passage secondary-air supply combustion apparatus secondary air switching valve secondary air system secondary alarm circuit Secondary Alarm Station Secondary Alarm System secondary albite secondary albumose secondary alcohol secondary alcohol ethoxylate Secondary alcohol oxidase Secondary-alcohol oxidase secondary alcohols secondary aldosteronism secondary alerting system secondary Al FRPs works secondary aliphatic amine secondary aliphatic monohydric alcohol