Someone tripped over the extension cord. 有人被延长线给绊倒了。
She stumbled over the long word. 她结结巴巴地说那个长词。
He stuttered over the flowery congratulations he offered and his formal hope that the first grandchild would be masculine. 他结结巴巴地说着那些他献上的华丽的贺词，还有他的郑重希望，第一个外孙会是男性的。
