Walking further, I noticed a red balloon aloft, rising to the higher altitude.

往前走不远，我注意到一只红气球飘在空中，它越飞越高。

youdao

The study dismisses another blimpish idea, though: that of pumping sulphurous chemicals up a long pipe held aloft by a large tethered balloon.

报告排除了另一种早期的设想，即通过一个巨大的系留气球，用固定在上面的长长的管子向天空喷洒硫化物。

youdao

Instead of being borne aloft by a balloon, it is dropped from a high-altitude and floats down on a parachute.

它(下投式探空仪)不是由气球载入高空，而是由高空投掷下来并靠降落伞由空中飘浮下降。

youdao

The Stratospheric Particle Injection for Climate Engineering project, or SPICE, is a British academic consortium that seeks to mimic the actions of volcanoes like Pinatubo by pumping particles of sulfur dioxide, or similar reflective chemicals, into the stratosphere through a twelve-mile-long pipe held aloft by a balloon at one end and tethered, at the other, to a boat anchored at sea.

NEWYORKER: The Climate Fixers

The iconic balloon (itself large enough to spread over 40 acres) carried our new hero aloft and fans watched as he dropped at Mach 1.24.

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