ˈtrac·tion en·gine 名词
trac·tion [ˈtrækʃən] 名词 no pl
1. traction of car, wheels:
2. traction 力学 (pulling):
engine
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单语范例（未经PONS编辑处理）
It is a model of a typical traction engine with a full-length canopy.
en.wikipedia.org It began when he saw the need for an improved traction engine, what some now call a steam tractor, to pull his combine harvesters.
en.wikipedia.org It is usually possible to see portable engines working at traction engine rallies and steam festivals.
en.wikipedia.org However, it was deemed too impractical to move intact, and was brought down by steel cables attached to traction engine.
en.wikipedia.org The frame carrying the church was then dragged by a traction engine over the runners and into the road.
en.wikipedia.org