Littered on the grass, we seemed dingy, urban riff-raff. We defiled the scene, like sardine-tins and paper bags on the seashore.
我们却好像是一堆肮脏的城市垃圾，被胡乱丢在草地上。如同海滩上的纸袋和沙丁鱼罐头盒一样败坏风景。
2
In 1994, Rudolf Raff and colleagues at Indiana University in the USA decided to use genetics to put a number on the probability of evolution going into reverse.