Specifies that discardable types should be removed 指定应移除那些可丢弃的类型。
2.
Marks a type definition as discardable 将类型定义标记为可放弃。
3.
Creates a discardable undo unit 创建可放弃的撤消单元。
4.
Marks the section as discardable 将节标记为可放弃
5.
A type definition might be marked discardable if it is not referenced by any other code in its assembly 如果类型定义没有由其程序集中的其他任何代码引用，则可能将其标记为可放弃。
6.
Dnd : meaning " disqualification not discardable " , the ruling when the jury disqualifies a boat from a race and awards the maximum number of points for the race , points which may not be discarded from the overall score later 意思是扣除取消比赛资格分数，是裁判委员会做出的取消船只参赛资格的判决，并记该轮比赛的分数为最高分，最终计算总分时不扣除。
