He was fully aware that even if, by some miracle, he managed to find a suitable spell, he'd have a real job mastering it overnight.

他十分清楚，即使奇迹出现，他发现了一个合适的咒语，也很难在一夜之间掌握它了。

By the evening before the second task. Harry felt as though he were trapped in a nightmare. He was fully aware that even if, by some miracle, he managed to find a suitable spell, he'd have a real job mastering it overnight.

到了第二个项目的前一天傍晚，哈利觉得自己仿佛陷入了一场噩梦。他十分清楚，即使奇迹出现，他发现了一个合适的咒语，也很难在一夜之间掌握它了。