慢速英语:Defending Spacecraft and Astronauts Against Dust

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短语讲解：

1. They came together to form the Sun, the Earth and other planets, and life as we know it.

come together 聚会，相见; 会面; 汇集
例句：The parallels seem to come together in the distance.
平行线在远处看上去似交合在一起。

2. David James says he became interested in space more than 10 years ago when he was studying physics in graduate school.

intereste in 对…有兴趣
例句：By this time I had developed an interest in engineering.
这时我对工程学产生了兴趣。
more than 多于
例句：There is more than a whiff of propaganda.
所含之宣传实在不止一点点。