常見例句雙語例句Su-17 and its export variants Su-20 and Su-22 were the basis of the USSR’s aircraft as well as of 12 other countries of the world.蘇-17以及其出口型蘇-20和蘇-22是蘇聯(lián)及世界上另外12個國家的中堅力量。 返回 su ussr