If bicycle pump, then the alignment hole - by-blow look at a better effect.
如有自行车打气筒，则对准小孔逐个吹一下效果更佳。
The engineers planned to dig a hole into the ice and pump the water away.
工程师们计划在冰川上凿一个孔，将水抽走。
French engineers are drilling a hole into the ice to pump the water away.
法国工程师正在冰层上钻洞，用泵将湖水排出。
French engineers are drilling a hole into the ice to pump the water away.
法国工程师正在冰层上钻洞，用泵将湖水排出。
应用推荐