词汇	calibration ring
释义	calibration ring un.环规；定型圈
随便看	have an apathy toward have an appeal for have an appetite have an appetite for Have an apple Have an apple of our own growth have a nasty spill have an appointment have an appointment at have an appointment for have an appointment with have an appointment with the doctor have an apprehension for have an aptitude for have an aptitude for language Have an aptitude for music have an aptitude to have an aptitude to vices have an ardent love for have an argument Have an argument with sb have a narrow escape have an arrow left in her quiver have an arrow left in his quiver have an arrow left in my quiver