And that really is the bicycle pump.
这正是自行车打气筒的情况。
At schools, children pump the water through a "bicycle system."
在学校，孩子们通过一种“自行车系统”泵水。
Dan: I want to buy a new bicycle pump.
阿丹：我想要买一个新的脚踏车打气筒。
She blow up the flat tyre with a bicycle pump.
她用自行车打气筒给瘪了的轮胎打气。
Can you lend me your bicycle pump?
能把你的打气筒借给我吗？
What is the most efficient way to pump your bicycle tire?
给自行车轮胎打气的最有效率的方法是什么？
What is the most efficient way to pump your bicycle tire?
给自行车轮胎打气的最有效率的方法是什么？
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