Vacual
真空的, 近于真空的
??? 情景例句
A movie.
電影。
The best teachers of humanity are the lives of great men.
啟迪人性最好的導師是偉大人物的生活。
He believed that everyone should be prepared to do heavy work, from the leaders to the poorest peasants.
他認為從領袖到最窮苦的農民，每個人都該樂于從事重體力勞動。