bisect

平分线,将物体分成相等的两部分。

A bisector, which divides into two equal parts.

信封、卡片或其碎片,上面贴有正常发行邮票的剪下半枚,并加盖一个或多个邮政戳记。通常在战时正常低面值邮票可能无法获得时使用。

An envelope, card, or fragment thereof showing an affixed cut half of a regular issued stamp, over which one or more postal markings have been applied. Typically used in wartime when normal lower rate stamps may not be available.