慢速英语:NASA's Curiosity Rover on Mars

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1. complex adj. 复杂的,错综复杂的
例句：It was a complex problem.
这是一个复杂的问题。

2. surface n. 表面
例句：It has a rough surface.
它表面粗糙。

3. ingenuity n. 心灵手巧;独创性;足智多谋
例句：She had the ingenuity to succeed where everyone else had failed.
她真是心灵手巧,别人办不到的事她却做成了。

4. examine vt. 检查;细查;诊察
例句：The doctor examined the boy and found there was nothing the matter with him.
医生检查了男孩的身体发现他是健康的。