The power of this simple story propelled history forward.
这个简单故事的力量推动着历史滚滚前行。
2
The first of its kind, this is the self-propelled suitcase that automatically provides power assistance when you encounter inclines or are straining to roll the suitcase.
这是一款首创的自助式行李箱，它能够在你拉它上坡或者感到吃力时助你一臂之力。
3
This power-propelled grindstone type we had at St. Xavier's.