Caseharden

[keis,hɑ:dn]

解释:

(v. t.) To subject to a process which converts the surface of iron into steel.

(v. t.) To render insensible to good influences.

录入:玛格

同义词及近义词：

v. a. Harden (on the outside), steel, convert into steel (on the surface).

整理:默娜