at one's fingertips　了如指掌
How to get at that little island is at his fingertips.他知道怎么去那个小岛。
at one's wit's end　智穷
Don't ask him.It is also at his wit's end.不要问他了，他也不知道。
big shot 大人物，大亨
He is a big shot in our little town.
black sheep　败家子，害群之马
Every family has a black sheep.家家有本难念的经。
black and blue　遍体鳞伤
The thief was caught of red-handed and beaten black and blue.那个小偷当场被抓住并被打得青一块紫一块的。
black and white　白纸黑字
The proof is in black and white and the murderer has no any excuses.证据确凿，凶手再也无话可说。
blind alley　死胡同
You are heading into a blind alley.你正在钻牛角尖。
blow hot and cold　摇摆不定
This guy seemed to have no own idea.He always blew hot and cold.
这家伙好象没什么主张，总是摇摆不定。
blow one's own trumpet　自吹自擂
Don't blow your own tumpet.Let us see what on earth you can do.
不要自吹自擂了，让我们看看你到底能做什么。
born with a silver in one's mouth　出生在富贵人家
He is born with a silver in one's mouth.他是含着金钥匙出生的。
bland new 崭新的
a bland new coat　新衣服
break the ice　打破沉默
The couple hadn't spoken to each other for a week.They were both waiting for the other one to break the ice.
这对夫妇已经一个星期没说过话了。两人都在等另一方先开口。
by a blow　无意中的一击
He is beaten to the ground by a blow.他被击到在地。
can't stand it any longer　不能再忍受了
I can't stand it any longer,I quit.我再也忍受不了了，我走。
carry something too far　过火了
You are carrying your joke too far.你玩笑开得太过分了。
castle in the sky　海市蜃楼
You plan is nearly a castle in the sky.你的计划简直就是空想。
cats got one's tongue　哑口无言
chain smoker 老烟枪