他帮助了我和我父母，他向我们解释到底问题是什么，做了很多试验来找到能有效地药物。
He goes out of his way for someone like me and my parents because he had to explain to them what was wrong with me and do lots of different tests to find the medicine to heal me.
他向我们解释了发生了什么事。
他向我们解释了发生了什么事。
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