Milk must be kept in a cool place, or else it will go sour.
牛奶如果不存放在阴凉处，很快就会坏了。
It's so cool here in summer, it must be even colder in winter.
这里夏天都这么凉，冬天岂不是更冷吗？
Milk must be kept in a cool place, or else it will go sour.
牛奶要放在阴凉地方，否则会发酸。
Milk must be kept in a cool place, or else it will go sour easily.
牛奶要放在阴凉的地方，否则就容易变酸。
Milk must be kept in a cool place, or else it will go sour easily.
牛奶要放在阴凉的地方，否则就容易变酸。
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