Talk about (phrasal verb)

　　●To mention or discuss; to consider or examine in speech or writing.（談論）

　　Examples:　　

　　1.The author talks about the different aspects of this question.

　　2.Let's not talk about it now.

　　Abide by sth (phrasal verb)

　　●To follow a rule, decision, or instruction.（遵守）

　　Examples:　　

　　1.Competitors must abide by the judge's decision.　　

　　2.They promised to abide by the rules of the contest.

　　Better late than never (idiom)

　　●The delayed occurrence or achievement of something that one desires is better than it not happening at all.

　　 （晚來總比不來強；遲做總比不做好）

　　Examples:

　　1.After two weeks, I finally got a return phone call from that company. Better late than never, I guess.

　　2.You were supposed to be here an hour ago, still better late than never, I suppose!

　　Learn sth by rote (idiom)

　　●To learn something by repeating it many times rather than by understanding it.（死記硬背，熟讀）

　　Examples:　　

　　1.Children still learn their times tables by rote.　　

　　2.She learned the equations by rote.

　　Castles in the air (idiom)

　　●Dreams, hopes, or plans that are impossible, unrealistic, or have very little chance of succeeding.（空中樓閣，空中城堡，想入非非的計劃）

　　Examples:

　　1.You need sound financial advice and a strong plan if you're going to start your own business - don't just build castles in the air.　　

　　2.He keeps talking about how he'll move to Los Angeles to be a famous actor, but it's just castles in the air if you ask me.