短语讲解：

1. Since then, he has visited more than 30 sites.

more than 多于
例句：Margaret needed support more than ever.
玛格丽特比以往更需要关心。

2. "It was fun to be able to use it with your own hands," Meyer said.

be able to 能够
例句：He will be able to take up his normal routine shortly.
他不久就能处理日常事务。
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