从飞行员到秘书，每个行业都有自己的专用词汇和专业术语。
Every field from airline pilots to secretaries has its own vocabulary and technical terms.
不过语言学家一般认为，英语单词的数量，如果不包括专用词汇、人名、地名等，大约有17万个左右。
However, linguists generally believed that the number of English words, if you do not include specific words, names, place names, etc., about 170,000 or so.
不过语言学家一般认为，英语单词的数量，如果不包括专用词汇、人名、地名等，大约有17万个左右。
However, linguists generally believed that the number of English words, if you do not include specific words, names, place names, etc., about 170,000 or so.
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