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(单词翻译)
In our last Moment of Science we heard how cockroaches1 can survive much higher doses of radiation than humans can. But did you know that cockroaches also have a special ability that could allow them to survive some of the consequences of global warming? Insects breathe through small pores located along their body. These small openings, called spiracles, act like valves, and can open or close to regulate the movement of fresh air in, or exhaled3 breath out of the insect’s body. When we are breathing through our nostrils4 or mouths, we lose water as we exhale2 the humid air from our respiratory system. Cockroaches have the same problem-losing water as they breathe. Scientists have known for some time that cockroaches can hold their breath by tightly shutting their spiracles for up to forty minutes at a time.
收听单词发音
1
cockroaches
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| n.蟑螂( cockroach的名词复数 ) | |
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2
exhale
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| v.呼气,散出,吐出,蒸发 | |
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3
exhaled
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| v.呼出,发散出( exhale的过去式和过去分词 );吐出(肺中的空气、烟等),呼气 | |
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4
nostrils
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| 鼻孔( nostril的名词复数 ) | |
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