VOA慢速英语:Four Young People Who Make the World Better

短语讲解：

1. The app lets deaf people create their own hand signs to communicate with friends.

communicate with 与…联系，与…交往; 与…相通
例句：He had no way to communicate with his brother.
他没有办法与他兄弟联系。

2. Mach will be studying economics in the next few years, but he will continue to work with new technology.

work with 与…在一起干; 从事…工作
例句：His secretaries work with system.
他的几位秘书工作有条不紊。

3. He grew up in the Canadian city of Vancouver and founded his first company when he was still in high school.

grow up 长大; 向上生长; 成熟; 出现
例句：A little trade began to grow up.
小生意开始兴隆起来。

4. It’s only worth it if you find something you truly care about – something you’re passionate about.

care about 关心; 在乎; 关怀; 担忧
例句：All this care about money is awful.
在钱上面煞费苦心太叫人吃不消。