沉默是一种可以学习的语言。
Collaboration across disciplines is essential for advancing our understanding of the universe.
We must balance the need for energy today with the imperative of protecting the planet for tomorrow.
我们必须平衡当今的能源需求与保护地球未来的必要性。
Thirty five is a very attractive age; London society is full of women who have of their own free choice remained thirty-five for years.