necessity
英 [nY萻esYti] 美 [nY萻[sjti]
n. 必要(性); (迫切)需要; 必需品; 自然规律
复数: necessities
例句:
1.Some people have to lead stressful lifestyles out of necessity.
一些人迫于生计不得不过着紧张忙碌的生活。
2.There is agreement on the necessity of reforms.
对改革的必要性已经达成了共识。
3.The assembly line of necessity kept moving.
生产线势必保持运转下去。