自然界中没有线条,只有相互映衬的色彩区域。
要在这个行业中领先,你必须尊重土地和在这片土地上工作的人们。
文明的分布很大程度上是气候刺激的结果。
反应倾向的强度取决于所接受的强化量。
"The truth is often stranger than fiction, but fiction is where we find the truth."
"The world is full of signs, but we are often too blind to see them."