Now the glowing ball expanded quickly, rising like a helium balloon.
现在，这个发光的球体迅速扩大，像氮气球一样升起。
You tie a helium balloon to your head and hope it ACTS like a mana shield.
你将一个氦气球系在头上，指望它能起魔法护罩的作用。
He also invented the Skyhook, an air rescue system that involved an airplane and a large helium balloon.
他还发明了高空吊运车，这是一种为飞机和大型的氦气球的空中救援系统。
Airship: a giant helium balloon would pump chemicals into the atmosphere via a 23km hose attached to the ground.
一个巨大的氦气球将化学物质通过一个与地面连接的23千米长的软管将化学物质泵到大气层中。
Just a little British ingenuity that saw a standard digital camera taped to a helium balloon and floated into the sky.
只需要点英国人的小智慧，将一个绑在氦气球上的标准数码相机飘入天空，万事俱矣。
‘If you’re going to loft a helium balloon to 20km you’d need have to have a very good handle on what the wind is doing at these elevations.’
如果你要在20公里的高度使用氦气球，你必须能很好的处理在那样的海拔高度的风的影响。
Vast scale: It is anticipated that the helium balloon would have to be roughly the size of Wembley Stadium to contain the amount of chemicals required
巨型尺寸：据估计氦气球的大小将和温布利体育馆相当，以容纳所需的化学物质。
US man who triggered a major alert by falsely claiming his son was adrift in a helium balloon has been sentenced to 90 days in jail - and his wife to 20.
一名声称自己儿子随一个氦气球漂浮在空中并因此引发公众警戒的美国男子被判刑90天监禁，他妻子获刑20天。
Experiment with a helium balloon, a hot air balloon, or a rigid sphere filled with different gases. Discover what makes some balloons float and others sink.
进行实验的是氦气球——热气球，或者一个充了不同气体的刚性球体。探究是什么让气球飘起来，而让其他物体沉下去。
Stratospheric: Robert Harrison captured images of the Earth like this one using a Canon Sure Shot camera fixed in a polystyrene box and attached to a helium balloon
平流层：罗伯特·哈里森将一台佳能SureShot相机固定在聚苯乙烯盒中并将盒子绑在氦气球上，仅凭此他捕捉到了上面这样的地球图像
He has spent two decades and nearly $20 million in a quest to fly to the upper reaches of the atmosphere with a helium balloon, just so he can jump back to earth again.
他把他过去20年的时光用来尝试做一件事情：乘坐氦气球飞到大气层的外缘，然后从那里纵身一跃，跳回地球。 为实现这个目标，20年来他已花费2000万美元。
A homemade helium balloon that broke free of its moorings in the United States, reportedly with a 6-year-old boy inside, has landed in a field after a flight across the Colorado countryside.
在美国，一个自制的氦气球意外升空，据报道，上面还有一个6岁的小男孩。随后，这个气球飞越科罗拉多的乡村之后在一个田野着陆。
I have here a ball — you may call it a balloon, but I call it a ball because there's no helium in it.
这里有个小球-，你也会叫它气球，但是我叫它球，因为里面没有氦。
The balloon may be filled with helium or hydrogen.
气球中可能会充满氦气或者氢气。
Balloon: Large airtight bag filled with hot air or a lighter-than-air gas such as helium or hydrogen that can rise and float in the atmosphere.
气球：一种大型气密球囊，内充热空气或轻于空气的气体（如氦或氢），以产生浮力，可在大气中上升和飘浮。
The helium will slowly seep out of the balloon.
氦气会慢慢从气球中渗漏出去。
A large helium or hot-air balloon constructed so as to resemble a figure or an object when inflated.
大型的填充氦气或热气的气球，充满气后模拟某个形象或物体。
They would fill a spherical weather balloon, available online, with helium and float the entire cooler-camera-cell-phone apparatus high into the atmosphere.
他们将填补球形气象气球，在网上与氦，以及浮动整个冷却器，相机，手机设备到大气中的高。
They would fill a spherical weather balloon, available online, with helium and float the entire cooler-camera-cell-phone apparatus high into the atmosphere.
他们将填补球形气象气球，在网上与氦，以及浮动整个冷却器，相机，手机设备到大气中的高。
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