Mary was only too ready to help others,seldom,if ever,refusing them when they turned to him.这里only怎么翻译?另外 既然有了seldom为什么还要if ever

问题描述:

Mary was only too ready to help others,seldom,if ever,refusing them when they turned to him.
这里only怎么翻译?另外 既然有了seldom为什么还要if ever