接着，我卖给他小号的鱼线，中号的鱼线，最后是大号的鱼线。
After that, I sold him a small size fishing line, then middle size fishing line, and finally big size fishing line.
论文介绍了法国和德国的线型，指出采用三次抛物线线型已成为大号码道岔线型的发展趋势。
The geometry of turnout of France and Germany is described. It is pointed out that cubic parabola has been a development direction of geometry of the big number turnout.
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