基本解釋[數學]類的零集英漢例句雙語例句Also, many times member variables of a class that point to other classes simply need to be set to null at the appropriate time.此外，您常常需要在適當的時候將指向其他類的類成員變量設置為 null。null set of class更多例句詞組短語短語null set of class nf NF 類零集null set of class更多詞組專業(yè)釋義數學類的零集