disinterested
adj
not influenced by personal feelings or interests; unbiased 无个人利害关系的; 公正无私的; 不偏不倚的
a disinterested act of kindness 没有私心杂念的好心的行为
My advice is quite disinterested. 我的建议是正直无偏的. =>Usage at interest2 用法见interest2.
and near its lower reaches there is a long tailing-off which is almost certainly the result of material transported out to deep water after being eroded from the continental masses.