失神be inattentive/absent-minded; be mentally ill
失语be unable to speak; logagnosia
失误fault; err or make a mistake
晒shine upon/on; dry in the sun
生物钟biological/living/body clock
生长grow; be born and brought up
软化bate; from stiff to compliant
三维超声检查three-dimentional ultrasonography
肾小球滤过率glomerular filtration rate