Hawthorn sweet and sour taste, has the special effect of Xiaoshi of the plot, increase appetite, help digestion is one of the best fruit, but eating too much is harmful and profitless.

山楂酸甜可口，具有消食化积的特殊作用，是增进食欲、帮助消化的最佳果品之一，但食用过多是有害无益的。

Shorten time or speed the story rhythm, all can increase nervous degree of the plot.

缩短时间或者加快故事节奏，均可以增加剧情的紧张程度。

Principles and calculation method were described of polygonal line setting and positioning of new sample plot. Application programme was appropriate for field work and could increase work efficiency.

叙述了新设样地折线测设定位方法的原理及计算方法，编制了适合于外业调查使用的计算应用程序。