推广服务的英文：
extension service
n. 伸展；延长；延期；电话分机
- Removed the sablotron extension in favor of the new XSLT extension.
去掉了sablotron模块，使用新的XSLT扩展模块 - The greatest difference was noted in extension.
伸展测试的差异是最显著的。 - addition or extension that prolongs sth
增加或延长的部分. - Such contamination has been extensively studied.
人们对这种污染进行了大量研究。 - They own extensive land by the sea.
他们拥有海边的辽阔土地。
n. 公共服务系统；公共事业机构；政府机构；帮助，效劳
v. 检修，维修；为…提供服务
- overhand service
高手发球 - take service with
在￥帮佣 - express goods service
特快货运业务 - We need to have the car serviced.
我们得把车送去检修一下了。 - to service treasury Bonds
支付国债利息