匿名消息来源的英文：
pipeline

Create a sales pipeline database.
创建销售渠道数据库。

He's got a pipeline of coke.
他有渠道能弄到可可。

You should bleed the pipeline of excess air.
你应该把管道中的多余气体排除。

New laws to deal with this abuse is in the pipeline.
正在制定处理这种弊端的新法令。

The oil is carried to the oil refinery by pipelines.
石油通过输油管输送到炼油厂。