skarp in English:

sharp teeth

That knife wasn't sharp and I couldn't cut the meat with it, so I resorted to using my pocket knife.

I have a hard time seeing the logic of this latest decision of his. He just isn't as sharp as he used to be.

Nobody anticipated such a sharp decline in interest rates.

He was on the verge of revealing the secret when a sharp look from Martha shut him up.

Its sharp claws began to open and close, open and close.

A sharp tongue is the only edged tool that grows keener with constant use.

In the kitchen, you're more apt to cut yourself with a dull knife than with a sharp one.

This may be because of a change in people's attitude toward marriage and the sharp increase of fast food restaurants and convenience stores which are open 24 hours a day and enable young people to live more easily.

What Alice, waiting for a reply, was faced with was a sudden howl. It was a resounding noise, sharp as to burst her ear drums, loud as to reach unto the heavens.

Dad, should I poke Rod with a sharp thing like the mouse did?

Sharp knife, sharp pain, sharp criticism, to be a bit sharp with people, sharp turn, sharp tongue

The economic and financial crisis also brought a sharp fall in world trade.

What time of day are you at your sharpest?

There is data indicating a sharp increase in seizures of falsified medicines by customs.

David has a keen interest in aesthetics — the qualities that make a painting, sculpture, musical composition, or poem pleasing to the eye, ear, or mind.

keen on something

A fence between makes love more keen.

Competition is very keen in the car industry.

Boeing, which builds more than half the world's commercial airliners, is understandably keen to draw attention to what can go wrong besides planes.

Japanese parents are not keen to talk about their own children.

bank was keen to build long term customer thrust.

They were very keen to start work as soon as possible.

She always look for extra work to do- she's very keen.

a. The butcher’s keen knife cut through the meat.

As a keen cyclist I am especially pleased by the provisions for carrying bicycles on the train.

They were very keen to start work as soon as possible.; Joan wanted to go to a movie but I wasn't keen (= I didn't want to go).; She's a keen tennis player.; She's keen on (playing) tennis.

meets a unique set of obstacles, but Campbell’s keen insight was that the outline of these stories is

He has become keen on Italian food since visiting Rome.

Hounds hunt by their keen scent.