Aerator

['eɪəreɪtə] or ['eə,retɚ]

解释:

(noun.) an apparatus for exposing something to the air (as sewage).

阿加莎手打--From WordNet

解释:

(n.) That which supplies with air; esp. an apparatus used for charging mineral waters with gas and in making soda water.

阿黛尔编辑