您要查找的是不是：
- Thrown by the runtime only when a null object is referenced. 仅当引用空对象时,才由运行库引发。
- Is thrown when an attempt is made to invoke a non-static method on a null object. 当尝试对空对象调用非静态方法时,将引发。
- The exception that is thrown when there is an attempt to dereference a null object reference. [本主题是预发布的文档，在将来发布的版本中可能会有更改。空白主题是为将来预留的。
- The particles are emitted away from a certain position that you define or from a null object that you use as a controller. 粒子从用户确定的某个位置发射，或者从用户作为控制物体使用的空物体上发射。
- Select one or more null objects that will be the particle emitters. 选择一个或者多个空物体作为例子发射器。
- Although we wont get any surprises with null objects when we work in this mode, access to the root of a deep graph may load the entire graph into memory and that can take a long time and use a lot of memory. 在这种模式下，尽管我们不再会惊讶于使用到空对象，但是访问对象深度图的根节点时会把这个对象图都装载到内存，这会花费很长时间也会消耗大量内存空间。
- The state or quality of being null. 无效无效的状况或性质
- The object used to indicate a null value in a cell. 用于指示单元格为空值的对象。
- By default, the new object is set to null. 默认情况下,新对象设置为空。此字段为只读。
- Is NULL if the DOM object does not have a name. 如果DOM对象没有名称则为NULL。
- He always travels first class expense is no object. 他出门总是用头等票－－费用不成问题。
- He was too shortsighted to focus on the object. 他由于近视过深而无法把视力焦点对准在该物体上。
- The act of making null and void. 废除使 ... 作废和无效
- I object to our privacy being invaded. 我反对我们的隐私权受到侵害。
- Many people object to experimentation on animals. 许多人反对用动物做实验。
- I object to your (unpleasant) insinuations! 我讨厌你那些(令人不快的)拐弯抹角的话！
- A cube is a three-dimensional object. 立方体是三维物体。
- The emission of visible light by a hot object. 白热光物体遇热发出可见光
- The microscope magnified the object 100 times. 这台显微镜将物体放大了100倍。
- The contract was null and void because it was not signed. 这个合同无效，因为它尚未签字。
