The principal reason for this omission is lack of time.

跳过它的主要原因是时间不足。

《牛津词典》

This could fix the main organisational challenges for the university, but not for the learners, due to lack of time, family obligations or funds.

这对于大学来讲可能解决了组织上面临的主要挑战，但对于学习者而言，由于缺乏时间、家庭义务或资金，挑战仍然存在。

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Lack of time precludes any further discussion.

由于时间不足，不可能进行深入的讨论。

《牛津词典》

That means their households, at some time during the year, had difficulty providing enough food for all members because of a lack of resources.

VOA: special.2009.11.23

Often it's a lack of time not taste that leads someone to hire a decorator.

WSJ: 20 Odd Questions: Nicky Haslam

Maradona, though, has blamed his side's predicament on a lack of time spent with the payers.

BBC: Maradona denies threat to resign

With this meeting only a month away, the lack of time for systematic preparations is distressing.

CENTERFORSECURITYPOLICY: Distressing Signals On Summitry