If something overturns or if you overturn it, it turns upside down or on its side.
例句
The lorry veered out of control, overturned and smashed into a wall...卡车突然失控，翻倒撞上了一堵墙。Alex jumped up so violently that he overturned his glass of sherry...亚历克斯一下子暴跳起来，结果把他那杯雪利酒都打翻了。
VERB
推翻，撤销（判决）
If someone in authority overturns a legal decision, they officially decide that that decision is incorrect or not valid.
例句
When the Russian parliament overturned his decision, he backed down...俄罗斯议会推翻了他的决定，他只好作罢。His nine-month sentence was overturned by Appeal Court judge Lord Justice Watkins.上诉法院法官沃特金斯撤销了对他作出的9个月徒刑的判决。
VERB
颠覆，破坏（政府或体系）
To overturn a government or system means to remove it or destroy it.
例句
He accused his opponents of wanting to overturn the government.他指责反对派企图颠覆政府。...a society where all the old values had been overturned.摒弃了所有旧价值观的社会