As you can see, the new table has five columns, and the count column is always zero.
可以看到，新表具有5列，count列始终为0。
So, no matter how you say it, this is always zero. So, in a way, this reinforces our intuition that del, even though it's not at all an actual vector sometimes can be manipulated in the same way.
因此，无论你怎么描述它，它总是0，那么在某种程度上，这加强了我们的直觉，即▽有时也可以用同样的方式计算,即使它并不是真正的向量。
Love is like multiplication, one is zero, the result is always zero.
爱情就像乘法，其中一项为零，其结果永远为零。
Love is like multiplication, one of which is zero, and the result is always zero.
爱情就像乘法，其中一项为零，其结果永远为零。
Insignificant at this time. Always zero.
此时不重要。总为零。
Insignificant at this time. Always zero.
此时不重要。总为零。
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