常見例句Given a certain power of engine,and so a certain amount of oil,there's practical limit to the todal weight of arecraft that can be made to fly. 一定的功率的引擎，對應(yīng)一定數(shù)量的油，這事實上限制了飛機(jī)能使其飛起來的縂重量。 返回 Todal