同根派生 bear cub相關詞英漢例句In a den, a polar bear gives birth to a cub but the cub is stillborn.在一個洞穴裡，一衹北極熊生産了一個幼子，可是幼熊生下來就死了。Knut drew an outpouring of sympathy around the globe after his mother cast him out as a cuddly cub.尅努特還是可愛的幼熊時遭母親遺棄，引發(fā)全球同情。bear cub更多例句