每日雅思词汇：量词的搭配　　a drop of water 一滴水; 　　a mug of tea 一大杯茶; 　　a stagnant pool of water 一潭死水; 　　a barrel of beer 一桶啤酒; 　　a bucket of milk 一桶牛奶; 　　a glass of milk 一杯牛奶; 　　a carton of fruit juice 一盒果汁; 　　a jug of fruit juice 一大杯果汁