n.large silvery fish found worldwide in warm seas but nowhere common; resembles a whale and feeds on plankton
同义词：Luvarus imperialis
英汉双解大词典
louvar/ˈluːvɑː/
1.
N（名词）
a large silvery whalelike scombroid fish, Luvarus imperialis, that occurs in most tropical and temperate seas and feeds on plankton: family Luvaridae 鲯鲭