期待的力量1
一双a pair of 一串a series of(表一连串的事情)a string of(表物) 一杯a cup of 一对,一双,几些a couple of一瓶a bottle of一(玻璃)杯a glass of一片a piece of 一套/组/副a set of 一袋a bag of一碗a bowl of一公斤a kilo of一种a kind of

红色芍药
一茶杯..a cup of 一玻璃杯..a glass of 一瓶...a bottle of 一碗...a bowl of 一片(块)儿..a piece of 一袋...a bag of
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