lack

英[læk]美[læk]

n.[U]
1. 缺乏，匮乏，短缺
v.[I]
1. 没有，缺乏，不足，短缺

同：	[n.] deficiency, want [v.] miss
反：	[v.] feature, have

lack，need，want，require

这些动词均有“缺少、短少”之意。
lack指完全短缺或数量不足。
need语气较重，指需要必不可少的东西，强调急需。
want侧重缺少某种必需之物，或个人渴望得到的东西。
require使用广泛，语气较轻。强调急需时可与need换用，但有时暗示所需的人或物是完成某一任务必不可少的。

Idle folks lack no excuses.
懒汉借口多。收藏
The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.
缺少腐殖质和过度淋滤使这种土壤对农业几乎无用。收藏
Rickets (or vitamin D deficiency) ：Disease of infancy and childhood characterized by defective bone growth due to lack of vitamin D.
佝偻病(亦作维生素D缺乏病):婴幼儿疾病，特征是骨骼发育不全，因为缺乏维生素D。收藏
The determination of absolute altitudes on the Moon meets with difficulties because of the lack of a definite zero reference.
月球上绝对高度的测定因为没有一个固定的参照零点，颇有困难。收藏
Lack of pretentiousness;simplicity.
诚实不虚伪；质朴。收藏

　　　 more...

the state of needing something that is absent or unavailable
- there is a serious lack of insight into the problem
- water is the critical deficiency in desert regions
- for want of a nail the shoe was lost
[同] deficiency, lack, want

be without
- This soup lacks salt
- There is something missing in my jewellery box!
[同] lack, miss
[反] feature, have

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