The service design is usually a secondaryactivity, although it is sometimes done in parallel.
服务设计常常是次要的活动，尽管有时候并行地完成。
2
Physical activity is almost always a secondary consideration, and then only because of its power to help us lose weight.
而体能活动几乎成了第二位考虑因素，我们会考虑体能活动也只是因为它能帮助我们减肥。
3
An error code will be returned to the application, and activity against the database will be stopped, if more secondary log files are required than are allowed by this parameter.