Retubing
更換管件
??? 情景例句
We need to promote light industry in this town.
我們需要推動這個城市的輕工業發展。
It'll be easier for us to get down to facts then.
這樣就容易進行實質性的談判了。
The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
事實上搜尋工作很困難，因為常常是早晨在甲地發現那只美洲獅，晚上卻在20英里外的乙地發現它的蹤跡。