色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

"Courage is not the absence of fear, but the will to act in spite of it."

Pain research is not just about alleviating suffering; it's about understanding a fundamental aspect of human biology.

Every scientist has a responsibility to consider the broader implications of their work.

"Writing is a journey into the unknown, where every word is a step into the abyss of the self."

真相總是丑陋的。