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Ceiling
01
天井 (てんじょう), シーリング
the highest part of a room, vehicle, etc. that covers it from the inside
Example
He stood on a ladder to change a lightbulb on the ceiling.
He installed soundproofing material on the ceiling to reduce noise from the floor above.
He noticed a water stain on the ceiling and called a professional to fix the leak.
02
雲底, 雲の高さ
(meteorology) altitude of the lowest layer of clouds
03
上限, 天井
an upper limit on what is allowed
04
飛行天井, 最大飛行高度
maximum altitude at which a plane can fly (under specified conditions)
