believably

The actor portrayed the historical figure so believably that critics praised his performance.

(Chinese) 这位演员对比历史人物的刻画非常可信，评论家们对他的表演赞不绝口。

She argued her case so believably that the jury began to doubt the evidence.

(Chinese) 她对自己的案情进行了非常有说服力的辩论，以至于陪审团开始怀疑证据。