Every new planet we find is a step closer to answering the age-old question: Are we alone in the universe?
海鲜的真正成本不仅仅是标价,还有我们未偿还的环境债。
A proof of a proposition is a process the nature of which is such as to produce in us a belief in that proposition.
Deciding what not to do is as important as deciding what to do.