英语单词的读音和拼写是有一定规律的，但有些词汇例外，这就给学习者带来许多困难。
There are some rules for English pronunciation and spelling, but these are also some exceptions to these rules, which give the learners great trouble in learning English words.
英语单词有重读音节和非重读音节之分。
English syllables are classified into two kinds: stressed and unstressed.
哪一个有五个字母的英语单词，将它的四个字母去掉后读音不变？
What five letter English word does not change its pronunciation when four letters are taken away?
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