學個詞 Learn A Word: 3108 upgrade 升級

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A monitoring group says satellite imagery has shown that North Korea is making rapid upgrades to a nuclear research facility. 一個監(jiān)督組織說，衛(wèi)星圖片顯示，朝鮮正在對朝鮮的一個核研究設施進行快速改善升級。

Royal Caribbean Cruise Line invested $120 million to upgrade a 15-year-old ship in an effort to attract younger consumers. 皇家加勒比海游輪投資1.2億美元，對一艘15年的游輪升級改造，力圖吸引更年輕的消費者。

好的，我們今天學習的詞是 upgrade, upgrade, upgrade ...

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