英文释义

n. the rhythmic contraction and expansion of the arteries with each beat of the heart

n. the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health

n. edible seeds of various pod-bearing plants (peas or beans or lentils etc.)

v. produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an apparatus to produce pulses