他对社会正义有强烈的信念。

He has a strong ___belief in social justice.

由于我们忙碌的生活方式和自满的（belief）对现代医学，我们可能忘记了适当饮食的重要性。

With our hectic lifestyles and complacent ___belief in modern medical sciences, we may forget about the importance of proper eating.

她对团队能力的信念对他们的胜利至关重要。

Her ___belief in the team's ability was crucial for their victory.