裂冰作用
Calve \Calve\ (k[aum]v), v. i. [imp. & p. p. {Calved} 3; p. pr. & vb. n. {Calving}.] [AS. cealfian. See {Calf}.] 1. To bring forth a calf. ``Their cow calveth.'' --Job xxi. 10. 2. To bring forth young; to produce offspring. Canst thou mark when the hinds do calve? --Job xxxix. 1. The grassy clods now calved. --Molton.
calving n : giving birth to a calf