劍橋詞典3G technology is new and improved , and is used in mobile phones on which you can use the internet, watch television , etc. 3G is short for 'third generation '. （尤指手機技術(shù)） 第三代的 （可以上網(wǎng)、看電眡的） They invested heavily in 3G mobile phone networks . 他們投入巨額資金開發(fā)3G手機網(wǎng)絡(luò)。 返回 3G