单词	provide refreshments
释义	provide refreshments 供应点心与饮料
随便看	self purging trap self-purging trap self purging waste pump self-purging waste pump selfpurification self purification self-purification self-purification ability self-purification ability of environment self-purification activity selfpurification amount Self-purification capacitor self-purification capacity self-purification characteristic self-purification characteristics Self-purification coefficient self purification constant self-purification constant self-purification experimentation self-purification factor self-purification of water body self-purification of waters self-purification parameter selfpurification process self purification process