纯真无邪 meaning in English

pure and innocent

When we first saw the cheerful looks and innocent smiles on the faces of these youngsters , we wondered what crime they could have committed at such a young age
看到他们纯真无邪的笑容，令人十分纳闷，这样的年会犯什么罪，后来慢慢了解他们的状况和犯罪原因，大部分是好奇吃安非他命，少部分是殴打及偷窃。
What can they do to these kinds of folks , who are as pure and innocent as angels and do nothing wrong ? if they come , they can only learn from us . if they are bad , they will learn and become good
我们像天使一样纯真无邪，又没做坏事，如果他们来了，也只能向我们学习如果他们不好，也可以学习变好，这就是我们对抗不好的外星人的方法，不然，怎么对抗他们？