Various projects have already been started to migrate from an existing issue tracker to GitHub, for example Lighthouse and trac.

众多项目都已经开始准备从其它的问题跟踪器迁移到Github上来了，例如Lighthouse和Trac。

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According to its Web page, "trac is an enhanced wiki and issue tracking system for software development projects," but it works equally well for administration requests.

Trac的网页指出，“Trac是一个用于软件开发项目的wiki和问题跟踪系统”，但是它同样适用于跟踪管理请求。

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Based on the general formula for the stability analysis of common jointless trac ks, the calculation method for the stability of switches of a jointless turnout is put forward.

基于普通无缝线路稳定性分析的统一公式，探讨了无缝道岔转辙器稳定性的计算方法。

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David Burnham, a co-director of TRAC, told The Huffington Post that the fall-off in financial fraud prosecutions most likely does not reflect a fall-off in financial fraud itself.

FORBES: Not Prosecuting the Banks

She was given a shiny black 2001 Ford Explorer Sport Trac (lease payments and fuel are gratis) and a territory of 14 Wal-Marts in central Illinois and Indiana.

FORBES: One Pen At A Time

The TRAC study also determined that the number of federal weapons prosecutions has fallen nearly every year in the U.S. from a high of 11, 015 in 2004 to 7, 774 in 2012.

FORBES: Move up http://i.forbesimg.com t Move down