英语翻译牛奶很容易变酸秋天气候转凉,树叶变黄(主要不知道该用什么时态更好?)北极熊的毛发很厚要求:用连系动词!另外形容一

Milk goes sour easily。It becomes cool in fall,and the leaves turn yellow。(一般现在时即可）Polar bear's fur is very thick。convincing/compelling