turn a new leaf

基本解释

Thirdly, it's necessary to formulate new conception of scientific management and turn a new leaf in the field concerned.
第三，形成科学管理的新思路，开创管理新局面；
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Western leaders were right to have given him a chance to turn a new leaf after 2003,when he renounced his nuclear programme.
在03年后他放弃了核计划，西方领导人才一改以往态度给了他一次机会（译者注：我记得好像是联合国取消对利比亚的一些持续了很多年的制裁）。
As flowers unfold and life renews, it is hard to imagine a more perfect setting for smokers to turn a new leaf and quit smoking.
花开花落，新的生命重新开始。用这来形容吸烟者戒烟并重新开始新的生活是再恰当不过的了。
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Beyond that, there's Venezuela and Bolivia, and both leaders made overtures to the president-elect, saying they wanted to turn a new leaf, open a new page.
NPR: Obama Win Changes Perceptions Abroad
Apple is understandably working to improve the mapping application, and removing Williamson appears to be part of an attempt to turn over a new leaf.
FORBES: Report: Maps Chief Ousted at Apple
In fact, if you think about it, the investors dumping its shares are in essence betting the U.S. government is about to turn over a new leaf and embrace tough, disciplined spending habits.
FORBES: CSC Shares Are A Bargain