您要查找的是不是：
- The state or quality of being null. 无效无效的状况或性质
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- The act of making null and void. 废除使 ... 作废和无效
- The earthquake may cause a region to fall in. 地震可以使一个地区下陷。
- Storms spring up easily in this region. 这个地区很容易发生风暴。
- He is earning a salary in the region of25,000. 他当时的薪金在25,000英镑左右。
- The contract was null and void because it was not signed. 这个合同无效，因为它尚未签字。
- A storm that cut off power to the whole region. 切断了整个地区电力供应的暴风雨
- The court ruled that the claim was null and void. 法庭裁决此项要求无效。
- A planar region bounded by a circle. 圆形区，圆形空间被圆所包围的一个平面区域
- A vineyard or wine-producing region in France. 克鲁法国的葡萄园或葡萄酒生产区
- Food and fuel were scarce in this region. 这地区食物和燃料都很缺乏。
- There used to be a military base in the region. 这地区过去有个军事基地。
- He is an authority in the region of chemistry. 他是化学界的权威。
- The marriage was declared null and void. 婚姻已宣告无效了。
- I have a pain in the lumbar region. 我腰部疼痛。
- There used to be a lot of troubles in that region. 那个地区过去动乱不已。
- The null subset corresponds to the term 1. 空集则对应于常数项1。
- Nobody likes to live in that desert region. 没有人喜欢生活在那个沙漠地区。
- A null reference pointer was passed to the stub. 向占位程序传送了空的索引指针。
