Definition
To be in a committed romantic relationship with someone for an extended period.
（与某人）维持长期的恋爱关系。
They started going steady in high school and are now married.
他们在高中时期开始稳定交往，现在已经结婚了。
After their last date, they decided to start going steady.
在他们上次约会之后，他们决定开始稳定交往。
Do you think they will go steady for a long time?
你认为他们会长期稳定交往吗？