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A soap bubble is a thin film of water floatingin air. Might it be possible to have the opposite——a thin film of air floatingin water? The idea does not seem very likely. How would you blow such a bubble for a start?Negative bubbles, as they are called, do exist and they are quite easy to make, although they never get very big. All you need is a clear glass or plastic container in which to form the negative（负的）bubbles, a spoon, a small jug and some liquid detergent. Fill the container to near the top with water and add a little detergent. Fill the jug witha little “detergent”. Hold the spoon the right way up just above the surface of the water in the container and gently pour water into it from the jug． Vary the height of the spoon above the water and the flow from the jug until silvery（银白色）water start to skate over the surface.
肥皂泡是漂浮在空气中的薄薄的一层水。有没有可能得到相反的结果：在水中漂浮的薄薄的一层空气？这看起来好像不大可能。怎么做才能吹出这样的泡呢？事实证明，被命名为“负气泡”的这种东西确实是存在的，制造起来也不难，不过负气泡永远也吹不大。用来制造负气泡的用品有洁净的玻璃杯或塑料容器，一把勺子，一个小壶和一些液体洗涤剂。将容器灌上水，灌满到接近容器口的部位，再加一点洗涤剂。拿壶在容器里舀点含有洗涤剂的水并离开水面一点距离，正面朝上平端着小勺，从壶里慢慢地往勺子上倒水，改变勺子距水面的高度以及从壶内往外倒的水流量直至银白色的水珠开始滑落到水面上。
Eventually, some of these beads will get pushed beneath the surface taking a film of air with them and forming the mysterious negative bubbles. They drift only slowly towards the surface and look different from normal underwater bubbles because, like soap bubbles in air, they do not form lenses（透镜）.
最后，一部分水珠将携带一层薄空气挤入水下，形成神秘的、负气泡。它们慢慢地漂向水面，样子看起来与一般水下气泡不同，因为如同空气中的肥皂泡一样，它们并不能构成透镜。
When a negative bubble bursts, a few small air bubbles race upwards towards the surface. This is just the opposite to what happens when a soap bubble bursts in the air. That is , a few small drops of water race downwards towards the ground.
当一个负气泡破裂时，一些小空气气泡竞相冲上水面，这与肥皂泡在空气中破裂时所发生的情况正好相反——从肥皂泡里坠落下来的是几滴小水珠。
记忆词卡
bubble气泡
surface 表面
spoon勺子
jug壶
肥皂泡是漂浮在空气中的薄薄的一层水。有没有可能得到相反的结果：在水中漂浮的薄薄的一层空气？这看起来好像不大可能。怎么做才能吹出这样的泡呢？事实证明，被命名为“负气泡”的这种东西确实是存在的，制造起来也不难，不过负气泡永远也吹不大。用来制造负气泡的用品有洁净的玻璃杯或塑料容器，一把勺子，一个小壶和一些液体洗涤剂。将容器灌上水，灌满到接近容器口的部位，再加一点洗涤剂。拿壶在容器里舀点含有洗涤剂的水并离开水面一点距离，正面朝上平端着小勺，从壶里慢慢地往勺子上倒水，改变勺子距水面的高度以及从壶内往外倒的水流量直至银白色的水珠开始滑落到水面上。
Eventually, some of these beads will get pushed beneath the surface taking a film of air with them and forming the mysterious negative bubbles. They drift only slowly towards the surface and look different from normal underwater bubbles because, like soap bubbles in air, they do not form lenses（透镜）.
最后，一部分水珠将携带一层薄空气挤入水下，形成神秘的、负气泡。它们慢慢地漂向水面，样子看起来与一般水下气泡不同，因为如同空气中的肥皂泡一样，它们并不能构成透镜。
When a negative bubble bursts, a few small air bubbles race upwards towards the surface. This is just the opposite to what happens when a soap bubble bursts in the air. That is , a few small drops of water race downwards towards the ground.
当一个负气泡破裂时，一些小空气气泡竞相冲上水面，这与肥皂泡在空气中破裂时所发生的情况正好相反——从肥皂泡里坠落下来的是几滴小水珠。
记忆词卡
bubble气泡
surface 表面
spoon勺子
jug壶