white whale

基本解释

wh-Where is my white whale?
wh-我的白鲸在哪里？
They almost find the white whale. Then they almost find the white whale. Then they find it.
他们几乎找到那只白鲸了。然后他们又几乎找到那只白鲸了。然后他们找到了。
Mr Assange may be the administration’s great white whale, but last year it netted a smaller fish when it sent an FBI linguist, Shamai Leibowitz, to prison for
虽说去年美国政府把向部落格传递秘密文件的FBI语言学家沙迈·莱波维兹关押在监狱20个月，可以说捕获了一条小鱼儿，但阿桑奇先生才是美国政府最想捉拿的大白鲸。

The ship's Captain Ahab is seeking to find the great,white whale that destroyed his former ship and bit off his leg.

Coolidge himself winds up unscathed, a sort of gray white whale that has eluded its baleful hunter.
NEWYORKER: Less Said
The Wall Street Journal has dubbed the former "Senator Ahab" for his "obsessive" pursuit of this white whale of a story about "politicized" intelligence.
CENTERFORSECURITYPOLICY: Truly "inappropriate" behavior
It fixates the party, and the candidates, in much the same way that a certain great white whale obsessed Captain Ahab, dooming him and almost his entire crew.
FORBES: The Secret to Victory: Feed The Opportunity, Starve The Problem

a small white toothed whale, Delphinapterus leucas, of northern waters: family Monodontidae (Also called beluga)