He solemnly declared that it was true.
他郑重声明此

。
;严肃
,愉快
;

;
;
;
;
;
;
;
;He solemnly declared that it was true.
他郑重声明此

。
He vowed quite solemnly that he would carry out his promise.
他非常庄严
发誓要
现他的诺言。
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