有说服力的用英语怎么说

theoretical

stringency;

理论上有说服力

there

is

inherent

persuasiveness

in

some

voices.

有些人的声音天生具有一种说服力。

his

sincerity

added

much

more

authority

to

the

story.

他的真诚更增加了故事的说服力。