1.opposition to 反对
He reiterated his opposition to the creation of a central bank.
他重申了他对创办中央银行的反对。

2.rest on 依靠
His argument does not rest on reasoning or on experiment, but on authority.
他的论点不是依靠推理或者实验，而是靠权威。

3.leading authority 权威；泰斗
This old man is a leading authority on wheat diseases.
这位老人是小麦病虫害方面的权威。