影響influence可數嗎

His first music teacher was a major influence in his life.

他的第一位音樂老師是他一生中對他影響非常大的人。

Her parents no longer have any real influence over her.

她的父母對她不再有任何真正的影響力了。

Many external influences can affect your state of mind.

許多外在因素都可能影響人的`心情。

A number of social factors influence life expectancy.

諸多社會因素左右着人的預期壽命。

Those friends are a bad influence on her.

那些朋友對她有負面的影響。