爱与失去是同一枚硬币的两面;没有失去就没有爱。
"Love and loss are two sides of the same coin; you can’t have one without the other."
能源安全是国家发展的命脉,我们必须坚定不移地推进油气勘探开发,保障国家能源供应。
The brain is a complex system, and we are just beginning to understand how it works.
每个心理状态都是过渡性的