success是可数名词吗?有复数形式吗?还是它本身呢?

success n.成功,成就；好成绩,好结果；成功的人（或物）
They have achieved remarkable success in their work.
他们在工作方面成绩显著.
successes n.成功（ success的名词复数 ）；成就；成功者；成功的事迹
She is vaunting her successes to all of us.
她正向大师夸耀她地成就.