examination可數嗎?

　　例句：

　　Your proposals are still under examination.

　　你的提議仍在審查之中。

　　You will need to have a routine biannual examination.

　　你需要做一年兩次的常規檢查。

　　They found invasive cancer during a routine examination.

　　他們在一次例行檢查中發現了擴散的癌細胞。