polar bear
短语
B2
大学
北极熊
发音
US
词形变化
polar bears
复数
polar bears
教材释义与例句
名词
北极熊；白熊
名词
冬泳者；极地熊；北极熊篇
释义与例句
n.
B2
-
1.
A white, semi-aquatic, hypercarnivorous species of bear, Ursus maritimus, whose native range lies largely within the Arctic Circle.
北极熊
白熊
词汇关系
词源
Coined by Thomas Pennant in A Synopsis of Quadrupeds (1771).
来源：wiktionary