a lack of

An empty refrigerator illustrates a lack of forethought.

空空的冰箱说明主人缺乏先见。

I think a lack of confidence underlies his manner.

认为他表现出的态度是因为他缺乏信心。

Despite a lack of formal education, she was far from stupid.

虽然有过正式教育，但是她一点也不愚蠢。

A lack of narrative drive leaves the reader with piecemeal vignettes.

述缺乏吸引力，读者读到的只是一些支离破碎的片段。

Their failure to reply to our letter seems to imply a lack of interest.

他们有回们的信似乎暗示他们缺乏兴趣。

Low levels of profitability mean there is a lack of incentive to undertake new investment.

利润率低意味着缺乏新投资的动力。

She challenges the cliche that women are more indirect than men and that tentativeness reflects a lack of confidence。

人们常说女人言行不如男人直，不决表示缺乏信心，她就是要向这种陈词滥调挑战。

The idea that a lack of methyl on the DNA can lead to human cancer is still just a hypothesis, and in any case oncologists have no drugs that can correct genome-wide undermethylation.

DNA上缺少甲基会导致人类出现癌症的想法，还只是个假说，肿瘤学家手头上也有任何药物，可以用来改善基因组上的全面去甲基化。