lack of没有，缺乏；不足，不够
for lack of因缺乏…；因缺少…；因没有…
1.The team lacked fluency during the first half.
该队在上半场打得不够流畅。
2.By 1908, the United States was the only industrial nation in the world that lacked workers' compensation insurance.
1908年以前，美国是世界上唯一一个没有工人赔偿保险的工业国家。
3.The ancestors of plants were photosynthetic single-celled organisms that gave rise to plants presumably lacked true roots, stems, leaves, and complex reproductive structures such as flowers.
植物的祖先是进行光合作用的单细胞生物，由此产生的植物可能缺乏真正的根、茎、叶和复杂的生殖结构，如花朵。
4.The players lacked the killer instinct.
这些运动员缺乏门前的嗅觉。
5.He lacked the judgment and political acumen for the post of chairman.
他缺少作为主席的判断力和政治敏锐性。
6.Somehow, though, their latest CD has a focus that the others have lacked.
但是，不管怎么说，他们的最新激光唱片具备别人没有的诉求点。
7.Because no modern land animals even approach sauropod size, scientists have also lacked a living analogue to use as a guide to possible sauropod behavior.
因为现代陆地动物的体型都比不上蜥脚类动物，科学家们也缺乏一种类似的活物参考以了解蜥脚类动物可能做出的行为。