Dreye權威釋義|advisory

a.

顧問的，諮詢的
He participated in the conference in an advisory capacity.
他以顧問資格參加了會議。
勸告的；忠告的
She wrote him an advisory letter.
她給他寫了一封勸告信。

n.

同義:

a.有幫助的，專業的

以上來源於：《英漢大辭典》

adj.

having the power to make recommendations but not to enforce them.

▸recommended but not compulsory.

n.

(pl. advisories)

N. Amer. an official announcement or warning.

以上來源於：《簡明牛津英語詞典》