例句-1: I've played all sorts of sports -- baseball, golf, basketball. But I love tennis best. In fact you could say tennis is in my blood -- I've played ever since I was old enough to pick up a racket.
例句-2: Jack, I do envy your ability to learn Chinese so fast. Everybody knows that Chinese is a very hard language to learn. But it seems you don't need any effort to pick it up -- it must be in your blood.
例句-3: For twenty years I've voted for Congressman White. But this time I think I'll vote for that young fellow who's running against him. We need fresh blood in the Congress, people who understand how much the world is changing.
例句-4: When our company's sales began to decline three years ago, our president immediately recruited a number of young people. This fresh blood made a lot of difference -- now our sales have doubled.