英语翻译1、当火车缓缓驶离时,Jack向母亲挥手告别.（用as）2、由玻璃和铁建造成的水晶宫在大火中被焚毁了.（用动词的ed形式）

1. As the train departed from the station slowly, Jack waved his hand to his mom.
2. The glass and iron made crystal palace was burned in the big fire.

难

1 as the train slowly left the station,jakc waved goodbye to his mother.
2 The crystal palace made of glass and iron was destroyed in big fires.