air bubble
(chiefly taxonomy) Mountain-loving; tending to inhabit mountains.
In an unwrought, unrefined, or unfinished condition; unpolished.
A very small hemisphere (in any of several contexts, but especially describing a design of microelectrode)
A small pocket of air inside a solid, a liquid or surrounded by a colloid within a larger fluid environment.
ガラス吹きの工程で、花瓶の中に気泡が閉じ込められて、小さくてきらめく内包物ができた。
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