correction
/kəˈrekʃn; kə`rɛkʃən/ n
1 [U] correcting 改正; 修改; 批改; 校正
the correction of exam papers 试卷的批改.
2 [C] right mark, etc put in place of sth wrong 错误之处的批改记号
a written exercise with corrections in red ink 用红笔批改过的书面作业.
3 [U] (fml 文) punishment 惩治
the correction of young delinquents 失足少年的改造
(arch 古) a house of correction, ie prison 感化院（监狱）.