Definition: a large, white bear that lives in areas near the North Pole Level: B2
北极熊可能非常危险。
___Polar ___bears can be very dangerous.
为北极熊创造真实的生活环境很困难。
It's difficult to create real-life conditions for ___polar ___bears.
北极熊利用其白色皮毛在雪中伪装。
A ___polar ___bear uses its white fur for camouflage in the snow.
