你能从本单元中找出和加下划线的单词有相同词根的词吗？
Can you find words from the unit that has the same root as the underlined ones?
任何字母、十进制的数字或标点符号连接器如下划线的单词字符。
A word character is any letter, decimal digit, or punctuation connector such as an underscore.
如果一个单词是字典中所没有的，那么它的下面将会出现一条红色下划线，相反什么都不会发生。
If a word is not in the dictionary it gets a red underline, otherwise it's left alone.
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