damper

n 1 movable metal plate that controls the flow of air into a fire in a stove, furnace, etc 气门; 气闸. 2 small pad that is pressed against a piano-string to stop it vibrating 制音器（终止钢琴弦震动的小毡块）. 3 (idm 习语) put a damper on sth (infml 口) cause (an event, atmosphere, etc) to be less cheerful, excited, etc 使（事情、 气氛等）受到抑制, 减弱: Their argument put a bit of a damper on the party. 他们的争论使聚会颇为扫兴.

dally, Dalmatian, dam, damage, damaged, damaging, damask, damask rose, dame, damn, damnable, damnably, damnation, damned, damnedest, damning, damp, damp-proof course (also `damp course), damped, dampen, damply, dampness, damsel, damson, dance, dance-band, dance-hall, dancer, dancing, dancing shoes, dancing-girl, dandelion, dander, dandified, dandle, dandruff, dandy, Dane, danger, danger money,