Caseharden

[keis,hɑ:dn]

解釋/意思:

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

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

錄入:玛格

同義詞及近義詞：

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

整理:默娜