乔安娜把车急转回主干道，向机场开去。
Joanna swung back on to the main approach and headed for the airport.
如果让其自然生长，主干会延伸到12英尺左右。
The main stem will extend to around 12 ft, if left to develop naturally.
波尔多位于巴黎至马德里的铁路主干线上，因此有频繁的列车。
Bordeaux is on the main Paris-Madrid line so there are frequent trains.
在主干道的中央，有一长排世界各国的国旗。
In the center of the main road, there's a long line of flags of the world.
当你进入学校门口时，你会发现有一条主干道直通我们学校中间的教学楼。
When you enter the school gate, you will see a main road leading straight to the teaching building in the middle of our school.
游客们惊讶地看到一名妇女驾驶着一辆巨大的橙色拖拉机行驶在罗马的一条主干道上。
Tourists were surprised to see a woman driving a huge orange tractor down one of Rome's main avenues.
他们找到了一罐红色油漆，并在学校的主干道上用鲜艳的红色写下：尼尔·斯通是个傻瓜！第二天，全校的人都看到了这句话。
They found a can of red paint, and wrote on the school main road in bright red: Neil Stone is a fool! The next day, the whole school saw these words.
两半部分由2到3亿条神经组成的主干连接，即胼胝体。
The two halves are linked by a trunkline of between 200 and 300 million nerves, the corpus callosum.
总线是各个部分间通信的主干道。
The bus is the main avenue of communication between the parts.
将变更合并回干线（即主干）的技巧
构造函数：X 平方分布检验的主干
用于管理资产的系统是分布开发的主干。
A system for managing assets serves as the backbone of distributed development.
将分支的变更合并到主干。
相反，变更控制团队的人负责将功能拉入到主干中。
Instead someone on the change control team is responsible for pulling features into the main branch.
目前，关系数据库服务器为许多公司建立了信息主干。
Relational database servers build the information backbone for many companies today.
这家航空公司经营五条主干线和十几条支线。
This airline operates five main lines and dozens of branch lines.
这家航空公司经营五条主干线和二十条支线。
This air line operates five main lines and twenty branch lines.
主干版本通常意味着向后兼容性不再被保证。
DHH: Major versions usually indicate that backwards compatibility is no longer guaranteed.
也就是说我们要在向主干检入代码之前要运行集成测试。
So we need to run integration tests before checking in to the trunk.
如果必须记住一点的话，那就是一切最终都要回到主干。
If you remember one thing, remember that all roads should lead back to the mainline - eventually.
不管功能特性如何进入主干，结构都是一样的。
Regardless of how the features make their way into the main stream the structure is going to be the same.
在等待设计项目的其他部分与主干同步时，常常出现延迟。
Often delays occur while waiting for other parts of the design project to synchronize with the main branch.
多个团队——如果其他团队同时向主干中发布代码该怎么办？
Multiple teams - what if other teams are publishing to the trunk as well?
最后，本文侧重介绍了云计算的主干，即云计算的基础设施。
Then the article ends by focusing on the backbone of cloud computing, which is known as the infrastructure of cloud computing.
所以在任何给定的时刻，在主干上都可能有我不知道的新代码。
So at any given moment, there may be new code on the trunk that I don't know about.
通常CI过程都是根据储存库的干线（即主干）而运行的。
The process of CI is typically run against the repository's mainline: the trunk.
在技术上，根据版本标记创建分支与根据主干创建标记是相似的。
Creating a branch based on a release tag is similar, in technique, to creating a tag based on the trunk.
对主干来说，CI服务器自动并持续地运行集成测试和回归测试。
For the trunk, the CI server automatically and continuously runs integration tests and regression tests.
稍后，由合并操作将更改从一个分支迁移到另一个分支(或主干)。
Later, moving changes from one branch to another branch (or the main trunk) is performed by the merging operation.
规则：经常从工作分支向主干合并代码，例如每完成一个故事之后。
Rule: Merge from your work branch to the trunk on a regular basis, for example whenever a story is done.
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