“helium balloon”可以造什么句，helium balloon造句
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.
Just a little British ingenuity that saw a standard digital camera taped to a helium balloon and floated into the sky.
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.
GIANT inflatable helium balloons.
If you've been pressing hard enough, you'll be surprised to find your arms now drifting effortlessly upward, as though you had helium balloons tied to your wrists.
You tie a helium balloon to your head and hope it ACTS like a mana shield.
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
GIANT helium balloons. Vibrant flags and T-shirts in crimson, orange and fluorescent yellow.
He also invented the Skyhook, an air rescue system that involved an airplane and a large helium balloon.
GIANT helium balloons. Vibrant flags and T-shirts in crimson, orange and fluorescent yellow. The sounds of chanting, laughter and drums.
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.
