蒋健棠英语广播 Episode100:安全警报的作用

1. occur,发生，出现。
eg:Earthquakes occur frequently in this area.
这一地区经常发生地震。

2. figure out,理解,明白。
eg:I can't figure him out.
我看不透他。

3. so far,到目前为止。
eg：So far, so good.
迄今为止， 一切顺利。