她的恐惧是有根有据的。

Her fear is well-founded.

对于有根有据的批评，我们必须乐意作出改变。

We must respond to well-founded criticism with a willingness to change.

这些问题中有些是有根有据的，有些则不是；但即使它们都是真的，他们都选择掩饰或轻描淡写地处理。

Some of these complaints are well-founded, others are not; but even if all were true, they would misdescribe and undervalue what is going on here.