常見例句"If everyone in the United States were balanced on a map, a trucker crossing Steelville's Main Street would once have straddled the center of gravity. 如果美國的每個(gè)人都能在地圖上保持平衡的話，那么這個(gè)正在穿越斯蒂爾維爾大街的卡車司機(jī)一度跨立在地心引力的中心。 返回 Steelville