n.套；罩；匣；盒；[經(jīng)](石油)套管；包裝

動詞case的現(xiàn)在分詞.

An oxygen mask will come down from overhead in case of an emergency. 若發(fā)生緊急情況，頭頂上會降下一只氧氣面罩。

A decorative casing for a light, often of paper. 燈籠燈的裝飾性外套，經(jīng)常用紙制成

Such a projectile in a metal casing; a cartridge. 彈藥(筒)裝在金屬盒中的射彈。彈藥

套管

n.(玻璃)陳列柜；顯示優(yōu)點(diǎn)的東西

vt.使展示；陳列

n.砌面(外殼；裝入)