Question

null表示什么意思？

Answer 1

null:adj.无效的;零值的;等于零的。

英 [nʌl]   美 [nʌl]  

A spokeswoman said the agreement had been declared null and void.

女发言人称该协议已宣布无效。

The agreement will be considered null and void.

该协议将被视作无效。

The declaration was null and void as it was proclaimed in completely illegal circumstances.

该声明无效，因为它是在完全非法的情况下宣布的。

If that value is null, the project name is used.

如果此值为空，则使用项目名称。