sit square;be all seriousness;dress well buttoned;sit in great state ;

In that incredible, in that unprecedented uproar, the ministers sat petrified.
大臣们在那一阵不可思议, 前所未有的喧闹声中, 正襟危坐、呆若木鸡.
来源:词典精选例句He straightened his clothes and sat properly , speaking with fervor and assurance.
他正襟危坐,侃侃而谈.
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