It begins with an involuntary spasm or sudden contraction of the diaphragm, the large dome-shaped muscle below our lungs that we use to inhale air.
它开始于一种无意识的痉挛或膈肌的收缩,膈肌是个大的、圆顶形的肌肉,位于肺的下方,用于吸入空气。
单词 | sudden contraction |
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原声例句
双语版 TED-Ed 演讲精选 It begins with an involuntary spasm or sudden contraction of the diaphragm, the large dome-shaped muscle below our lungs that we use to inhale air. 它开始于一种无意识的痉挛或膈肌的收缩,膈肌是个大的、圆顶形的肌肉,位于肺的下方,用于吸入空气。 |
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