"void of legal force," 1560s, from Middle French nul, from Latin nullus "not any, none," from ne- "not, no" (see un-) + illus "any," diminutive of unus "one" (see one).
双语例句
1. A spokeswoman said the agreement had been declared null and void.
女发言人称该协议已宣布无效。
来自柯林斯例句
2. Failure. The NULL value has been passed as a parameter.
失败. 将空指针NULL传给了一个参数.
来自互联网
3. If mem block is NULL, pointer is ignored and free immediately returns.
如果NULL内存块,操作将被忽略并且函数立即返回.
来自互联网
4. This function returns the removed node on success, or NULL on failure.
这个函数如果执行成功,将返回被删除的子节点;如果执行失败, 将返回null[空值].
来自互联网
5. A pointer to a NULL - terminated string representing a device instance identifier.
