我在读中学的时候，把化学和英语结合起来的一种称为“二硫碘化钾”，不知道老外知道这是什么单词?。
I don't know either, there is nothing to be shamed about, and next time when you talk to client service in HSBC, tell them they should be aware of their attitudes.
一个英文单词，每次去掉一个字母，又还是一个正确的英文单词，这是什么词？
What is the longest English word, that remains a valid English word, as you remove its letters one at a time?
让他来解决，这个单词在讲什么，那个问题的答案是什么，如果他想的话可以在其他孩子的帮助下解决，这是否是一个好的方式来说或者作。
Let him work out, with the help of other children if he wants it, what this word says, what the answer is to that problem, whether this is a good way of saying or doing this or not.
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