穿越哥达山的铁路隧道是阿尔卑斯山铁路新干线的主体工程

The railway tunnel through the Gotthard mountain constitutes the centrepiece of the New Railway Link through the Alps

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但如果想集成开发人员在分支上的变更并检查支线与干线的合并，这个原理也适用于分支。

This can be extended to branches as well, with the intent of integrating changes among developers working on the branch and checking the merge with the mainline.

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“写书当然可能成为一个导致掉发、秃发的诱因”费城皮肤病干线的皮肤病专家奥尔·巴拉克如是说。

"Writing a book can definitely be a stressor that can lead to hair loss, or alopecia" says Orr Barak, MD, a dermatologist at Main Line Dermatology in Philadelphia.

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