Early booking is advisable.
早訂票是明智的。
It will be advisable for you to drop an acquaintance such as John; he is not a good companion for you.
你和約翰那樣的人斷絕往來是明智的，對于你他并不是一個好伙伴。
It is advisable to book early.
宜提早訂票。
It may be advisable to have a blood test to put your mind at rest
最好驗一下血，好讓你自己放心。
The paths are often very rocky so strong boots are advisable.
路上通常石頭很多，所以最好穿結實耐磨的靴子。