The students were asked to write down five words they might say after hitting their finger with a hammer.
VOA: special.2009.08.18
He was motionless, all but for one finger that moved up and down in front of his face as if he were marking time with it.
他一动也不动,除了一根手指在他的面前上下摆动,好像在用它标记时间。
I could take and draw a line continually down the molecule where my finger was touching; my finger would be touching a phosphate here, the 5' carbon, the 4' carbon, the 3' carbon, and the next phosphate.
我可以画一条这样的线,沿着这个分子不断向下延伸到我指的地方,我指的这一点代表着磷酸基,5' 碳部位,4'碳部位,3' 碳以及下一个磷酸基
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