债务要么产生于契约,要么产生于侵权行为。
The monument is a fixed point in the changing city.
我不完美,但我始终是我自己。
可持续性不再是可选项,而是商业的必然要求。
The past is never dead. It's not even past.
"The beauty of biology lies in its complexity and the endless possibilities it presents."