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

Fall on deaf ears 不加理睬的，不听取
Not to take any notice of what is said
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!

Take things easy 放轻松
To relax
Example: It's better for our health to take things easy than to worry about problems all the time.

Eat like a horse 吃得很多
To eat a lot; to have a very big appetite
Example: Fred eats like a horse. When I was a growing lad like him, I used to eat a lot, too.

Catch one's eye 吸引某人注意
To attract somebody's attention
Example: A movement behind the curtain caught my eye – I thought it was a burglar and rushed out of the room!

Have an eye for something 对某事(某物体)了解得非常清楚
To be very good at doing something, or have a great understanding of something.
Example: As a botanist[specializing in the study of plants ], he has to describe and draw plants accurately, so he must have an eye for detail.

Turn a blind eye 熟视无睹
To ignore an action, even though one should do something about it
Example: Parents will spoil their children if they constantly turn a blind eye to their bad behavior.

Keep an eye on 照看，密切注视
To watch carefully; to look after
Example: Keep an eye on my purse – I'm just going to the bathroom.

Lose face 丢脸
To have one's reputation spoiled; to be embarrassed
Example: The large drug houses have lost face, because smaller companies are selling similar products at a cheaper price!

Lead the field 处于领头地位
To be the most successful person or group in an activity
Example: For decades, the House of Dior led the field in elegant fashion design.