1.Feeling blue 感到无精打采

　　Feeling sad or depressed

　　Example: She’s feeling blue, because the man she loves is far away.

　　2.New blood 新成员

　　New people brought into an organization to introduce different and original ideas

　　Example: It was decided to bring new blood into the school by employing teachers with the latest training.

　　3.Get to the bottom of something 弄清真相

　　To find out the truth about something

　　Example: I’m trying to get to the bottom of why David left without saying goodbye.

　　4.A piece of cake 轻松的事

　　Something which is very easy to do

　　Example: Here…let me put the batteries in for you. It’s a piece of cake.

　　5.Pay a call 拜访

　　To visit somebody

　　Example: As we’re in this neighborhood, we might as well pay the Jacksons a call, we haven’t seen them for ages.

　　6.Round the clock 夜以继日的

　　To do something continuously, without a break or pause

　　Example: The ambulance services worked round the clock hauling people trapped in the building to safety.

　　7.By chance 偶然，意外的

　　Unexpectedly; with no prior planning

　　Example: By chance, I bumped into my wife in the shopping mall.

　　8.Keep one’s cool 保持冷静

　　To stay calm in a difficult situation

　　Example: If the traffic is jamed, the only thing to do is keep your cool, or get out of the car and walk!

　　9.In a tight corner 处于困境

　　In an extremely difficult situation

　　Example: Whenever I get into a tight corner, I try to rely on quick thinking to get out of it.