correction可數嗎?

　　例句：

　　There are some programming errors that need correction.

　　有一些程序錯誤需要改正。

　　The correction had already been set in type.

　　那處修正已經出現在鉛字紙上。

　　Once the plaster was dry there was no room for correction

　　一旦灰泥一干，就沒有機會修改了。

　　Anything inappropriate in the text, awaits correction by the knowledgeable.

　　文中不當之處，有待識者教正。