3.Wait until you have researched the initial cost, and the long term expense and time needed before jumping into a hobby. Make sure you can afford it, and have the time to spare. As you begin, start small. For instance, you can do a lot of astronomy with the naked eye. If you have learned and continued with that, the next step should be purchasing a good set of binoculars. Invest in the fancy telescope only when you are sure you are committed.
在发展这个兴趣前，估算一下可能的花费。

来源:可可英语 http://www.kekenet.com/read/201001/94371.shtml