take one's eye off the ball

acousmatagnosis anterior notal process archdeacon's court backup job cliff-climbings core wire straightening machine CTMC (communication terminal module controller) eyelash sign hot-air deicer loose gland magnetic oil strainer micromagnetic motor switch Nyons presumption of proof saute mushrooms and bamboo shoots suction tube Trichocereus twta - travelling wave tube amplifier. vertical federalism