Upgraders
(upgrader 的复数) 质量改善装置；升级程序
🗣️ 情景例句
Can I help?
要我帮忙吗？
You'd better go and see a doctor about that.
关于那个毛病，你最好去看医生。
What will be the population of these countries by the end of the twentieth century?
到20世界末较发达国家的人口将是多少？