Cement steel
[機] 滲碳法制成鋼
?? 詞語組成解析
cement
[si'ment]
n. 水泥;膠合劑;膠接劑;粘固粉;
vt. 粘牢;鞏固;（用水泥、膠等）粘結;在…上抹水泥;
steel
[stil]
n. 鋼，鋼鐵;鋼制品;兵器;鋼鐵工業;
vt. 包上或鍍上鋼;使堅定;
adj. 鋼制的;鋼鐵業的;堅強的;[色彩]青灰色的;
??? 情景例句
That's understandable.
那是可以理解的。
I would like to call a carpenter to come this afternoon.
我要叫一個木匠今天下午來。
For our purposes, we are concerned only with one kind of cost----
就我們的目的而言，我們只關心一種費用-