dig deep

基本解釋

To plant the tree, we must dig a three-foot-deep hole.
種植樹，我們必須開掘一個三腳深孔。
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They dig deep, stand-up foxholes, which are safe except under direct artillery fire (and which are better than U.S. slit trenches).
他們挖很深的，能容人站立的散兵坑，這些散兵坑很安全，除非暴露在直接炮火之下（比美軍的狹長散兵壕更好）。
In order to dig out accurate and deep-seated information, modern technology is applied to the medical images.
將醫(yī)學圖像融合先進的技術，能夠獲得更加可靠詳實的信息。

Those names and symbols dig down deep-deep-deep into our political mindsets.
FORBES: Memo To Republican Convention: Unless Chris Christie Is Going To Be Your Nominee, Ditch The Elephant!
Then you shift gears and blame the teachers unions for protecting bad teachers that ought to be fired and dig into the all-too-deep trough of anecdotal evidence to dredge up a few examples of really bad teachers that were hard to fire.
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Subscribers not interested in upgrading yet can find similar functionality tied to Spotify's library with the EchoFi tool, but this venture represents the service's debut of an "all-new intelligent recommendation engine" meant to dig the tracks you want out of its millions-deep library.
ENGADGET: Spotify Radio feature turns into an app, offers Pandora-like stations with unlimited skips