As winter temperatures drop to minus 10 degrees Celsius, their dense fur keeps them warm.
重点讲解: 1. not only...but (also)...
不仅……而且……;
eg. We should not only be bold, but also be cautious.
我们不仅要大胆,而且要谨慎。
eg. His remark not only broke the ice, but aroused everyone's interest.
他的发言不仅打破了冷场,而且引起了大家的兴趣。
2. in good condition
情况良好; 完好;
eg. The salesman said the car was in good condition, and I was foolish enough to fall for it.
推销员说这辆汽车状况良好,而我那么傻竟然信以为真。
eg. He was obviously in good condition.
他的身体显然很健康。