First, the error object is examined to determine whether or not a file property contains a value.
其一，检查此错误对象以确定 file 属性是否包含一个值。
The examples above show that the use of collections of objects within an object should be examined carefully.
上面的示例说明应该仔细检查一个对象里对象集合的使用。
She examined the object under a microscope.
她在显微镜下检查这个物体。
应用推荐