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取“龙胆泻肝丸”药瓶一个(高约6.5厘米、直径约1.6厘米的软塑料瓶),用细针在其周壁不同高度处扎若干个针眼.再选一个合适的橡皮塞,橡皮塞中间插一个漏斗,如图1所
Take a “Long Dan Xie Gan Pill” medicine bottle (a soft plastic bottle about 6.5 cm high and about 1.6 cm in diameter), and use a fine needle to tie several pinholes at different heights along its peripheral wall. Select a suitable rubber stopper and eraser. Insert a funnel in the middle of the plug, as shown in Figure 1.