- 底內動物生活在水體底部的水生動物，尤指棲於鬆軟海底的水生動物
Aquatic animals that live in the substrate of a body of water, especially in a soft sea bottom.
- 字幕電映放映時疊映在畫面底部的翻譯過來的對話的書面形式；字幕
A written piece of translated dialogue superimposed at the bottom of the frame during a film; a subtitle.
- 沉渣沉到液體底部的東西；沉積物
Something that settles to the bottom of a fluid; sediment.
- 沒有屋頂但是有固定邊緣的扁平底部的鐵路貨車。
a low flat-bottomed railway car with fixed sides but no roof
- （指彈藥筒）通過撞擊底部的邊緣來發火。
(of a cartridge) fired by striking the rim of the base
- 基部的附著於底部的，如雄蕊之花粉囊到花絲
Attached by the base, as certain anthers are to their filaments.
- 大多角骨腕部接近拇指根底部的骨頭
A bone in the wrist at the base of the thumb.
- 底棲生物生活于海洋或湖泊底部的全體生物的集合
The collection of organisms living on or in sea or lake bottoms.