a glass or crystal globe used in crystal gazing by fortunetellers
例句
用作动词 (v.)
The witch said that her crystal ball could predict the future. 女巫说她的水晶球可以预测未来。
University management does not have a crystal ball for predicting where the next exciting developments will come from. 高校管理层没有水晶球,无法预测下一个令人欢欣鼓舞的重大成就出自那个学科。