汽车在高速公路上保持了每小时50英里的稳定速度。

The car maintained a ___steady speed of 50 miles per hour on the motorway.

为了在长跑中获得最佳效果，试着保持稳定的配速。

For best results in long-distance running, try to keep a ___steady pace.

过去五年经济呈现稳定增长。

The economy has shown ___steady growth over the past five years.