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pharynx: n. [解剖] 咽 trachea: n. [脊椎][解剖] 气管；[植] 导管 bronchi: n. 细支气管（bronchus 的复数） bronchioles: n. [解剖] 细支气管；小支气管（bronchiole的复数） alveoli: n. 肺泡；齿槽；巢房 sa 阅读全文
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The book`s seemingly casually written,conversational style masks _____ structure. A a loosely organized B a somewhat rambling C an overly diffuse D a 阅读全文
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The shift of tenses in a sentence is faulty when the tense of any verb differs. Example: × √ 阅读全文
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Have you ever taken a moment to ask yourself why you breathe in oxygen? Or why you breathe more heavily after exercise?The simple answer is that you n 阅读全文