4.Arguments within the party played a part in the downfall of the government.
党派内部纷争是政府垮台原之一。
5.The introduction of a new tax accounted in some measure for the downfall of the government.
这届政府垮台在某种程度上归收一种新税。
6.In chapter thirteen, Aristotle outlines an ideal of the central character of tragedy, the so-called tragic hero, and identifies the source of the character's downfall with something called hamartia.