Intercalation

[in,tә:kә'leiʃәn]

解释:

(n.) The insertion of a day, or other portion of time, in a calendar.

(n.) The insertion or introduction of anything among others, as the insertion of a phrase, line, or verse in a metrical composition; specif. (Geol.), the intrusion of a bed or layer between other layers.

手打:利