VOA慢速英语:Using National Parks as Classrooms

learn about获得, 学得
例句：I like reading historical stories because I can learn about the lives that people led long ago.
我喜欢看历史故事, 因为这样可以知道过去人们的生活。

2. NatureBridge is celebrating its fortieth anniversary and says one million young people have taken part in its programs.

take part in参加…, 参与…活动
例句：John takes part in many school activities.
约翰参加很多学校里的活动。

3. The activities are aimed at developing their science skills.

aim at (以…)瞄准; 针对, 以…为目标
例句：The visit was aimed at expanding the relations between the two countries.
访问的目的是扩展两国的关系。

4. We are not likely to get a lot of money in this current economy.

be likely to可能; 倾向于; 很可能
例句：John is likely to be in London this autumn.
今年秋天约翰可能在伦敦。