dampen
动词 dampen:
smother or suppress
同义词:stifle
make moist
deaden (a sound or noise), especially by wrapping
同义词:muffle, mute, dull, damp, tone down
reduce the amplitude (of oscillations or waves)
make vague or obscure or make (an image) less visible
check; keep in check (a fire)
lessen in force or effect