在观察性研究中,我们常常不得不依赖于无法直接检验的假设。
如果希特勒入侵了地狱,我也会在议会里夸奖魔鬼几句。
I think of other ages that floated upon the stream of life and love and death and are forgotten,and I feel the freedom of passing away.
中心地是交通和通讯线路的交汇点。