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你家里能找到一个类似试管的透明容器吗？没有的话．请你找一个盛过洗发精的塑料瓶（直径越小越好），把它上端的封盖去掉．做成直筒形（如图1－Ⅰ、Ⅱ）。先检查一下漏气不漏气。方法是：瓶子盛满水．用手掌封住口，倒立在有水的盆里．松开手，瓶里的水流不出来；或把空瓶倒立
Can you find a transparent container like a test tube in your home? If not. Please find a plastic bottle that holds the shampoo (the smaller the diameter, the better) and remove the cap on top of it. Made into a straight tube (Figure 1-I, II). First check the leak does not leak. Method is: the bottle filled with water. Seal your mouth with your palm and stand upside down in a basin with water. Release your hand and the water in the bottle does not come out; or empty the bottle