Speak one's mind (idiom)

　　●To say frankly what one thinks (about something).

　　（說出心裏話，坦言）

　　Examples:　　

　　1.People who speak their minds rarely lie and so they rarely put themselves in awkward situations.　　

　　2.Please let me speak my mind, and then you can do whatever you wish.

　　For the sake of sth, for sth's sake (idiom)

　　●Because of; for the purpose of something.

　　（為…的緣故，為了…）

　　Examples:　　

　　1.Philosophers and pure mathematicians seek

　　knowledge for the sake of knowledge.　　

　　2.You're only arguing for the sake of arguing.

　　In the right (idiom)

　　●To be morally or legally correct in what you do or believe.（正當，正確）

　　Examples:　　

　　1.Naturally, both parties think they are in the right.　　

　　2.It is a general courtesy in life to apologize for offending someone, even if you think you were in the right.

　　Drive sth home (to somebody) (idiom)

　　●To make sure that somebody understands something completely, for example by repeating it often.（透徹說明，使人明白）

　　Examples:　　

　　1.The instructor tried to drive home to us the need for safety precautions before diving.　　

　　2.Police used statistics to drive home their warning about the danger of drunk driving.

　　Pale into insignificance (idiom)

　　●To suddenly seem small and unimportant by comparison.（黯然失色，顯得不重要）

　　Examples:　　

　　1.Our difficulties pale into insignificance when compared to the problems of the homeless.　　.Last year’s spending pales into insignificance when compared with the proposed building renovations.