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

2. Feeling blue 感到无精打采
Example: She’s feeling blue, because the man she loves is far away.

3. Get to the bottom of something 弄清真相
Example: I’m trying to get to the bottom of why David left without saying goodbye.

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

5. Round the clock 夜以继日的
Example: The ambulance services worked round the clock hauling people trapped in the building to safety.

6. Keep one’s cool 保持冷静
Example: If the traffic is jamed, the only thing to do is keep your cool, or get out of the car and walk!

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

8. Keep in the dark 隐瞒
Example: We know my brother has a new girlfriend, but he's keeping her name in the dark.

9. Fall on deaf ears 不加理睬的, 不听取
Example: The city council’s order that garbage should be put in the bins fell on deaf ears; the sidewalks are still littered with trash!

10. Eat like a horse 吃得很多

Example: Fred eats like a horse. When I was a growing lad like him, I used to eat a lot, too.

来源：英语角