Upgrades
v. 提升( upgrade的第三人称单数 ); 使（机器、计算机系统等）升级; 提高（设施、服务等的）档次; 提高（飞机乘客、旅馆住客等）的待遇
🗣️ 情景例句
Do you remember
你记得
They had to cut down a lot of trees to make room for farms.
他们为了为农场增加空间不得不砍倒很多树。
By this time, a Lancaster bomber in reasonable condition was rare and worth rescuing.
到了那个时候，状况良好的兰开斯特轰炸机实属罕见，值得抢救。