银河系中心是强引力下的一个独特的自然实验。
Memory is a trickster, always rewriting the past.
有时最安静的时刻说得最响亮。
We must remember that this is a very small star and probably some of the larger and the more important stars and may be very virtual and happy.
Innovation requires both courage and patience.
Sustainability is not just a trend; it's a responsibility we owe to future generations.