necessity

需要；必然性；必需品英释nnsomething that you need to have in order to live

1 of necessity,必然地；不可避免地

2 out of necessity,出于需要，必定

3 by necessity,不得已；必然地，不可避免地

4 logical necessity,必然性，逻辑的必然性

1 She saw books as a necessity, not a luxury..她视书籍为必需品而非奢侈品。

2 A car is an absolute necessity if you live in the country..你要是住在乡下，绝对需要有辆汽车。