Silence. Tommy has finished his story. Red is stunned. But Andy looks like he's been smacked with a twobyfour.
寂静。汤米说完了他的故事，瑞德怔在那里，安迪却像没事人似的。
2
Analysis by gel electrophoresis revealed slight differences in amino acid sequence of the enzymes of two of the four pairs.
经凝胶电泳分析，发现四对实验对象中有两对的酶的氨基酸序列略有差异。
3
Quartz is quartz—a silicon ion surrounded byfour oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.