管理员摘要：
例句： I am sorry that I forgot to buy the milk. 对不起，我忘了买牛奶。 The heat turned the milk sour. 炎热的天气使得牛奶变酸了。 Is this milk fresh? 这是鲜牛奶吗？……
例句：
I am sorry that I forgot to buy the milk.
对不起，我忘了买牛奶。
The heat turned the milk sour.
炎热的天气使得牛奶变酸了。
Is this milk fresh?
这是鲜牛奶吗？