bio-pump

常见例句

• A tyre expands when you pump air into it.
  轮胎一打气就鼓起来。
• Lashing velocity of pump is concerned with nature of air.
  泵的抽气速率与气体的性质有关。
• This tire is flat; you didn't pump enough air in.
  这个轮胎没气了;你并没打足气。
• We have a pump for drawing water from the well.
  我们用一个水泵从井里抽水。
• The heart is analogous to a pump.
  心脏和水泵有相似之处。
• Can you lend me your bicycle pump?
  能把你的打气筒借给我吗？
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