贫乏的英文：
lacking
incomplete

参考例句：

Poverty of speech is the outward evidence of poverty of mind.
语言贫乏说明头脑空虚。

His knowledge of mathematics is superficial and scanty.
他的数学知识浅显、贫乏。

In bad circumstances; in a bad situation
贫乏;贫困

Ignorance is mere privation.
无知是一种纯粹的贫乏。

poorly or in an inferior manner.
贫乏地；以低劣的方式。

This map is sparing of information.
这地图内容贫乏。

His knowledge of Chinese history is meagre.
他的中国历史知识很贫乏。

His difficulties issue from his lack of knowledge.
他的困难是知识贫乏造成的。

There's beggary in the love that can be reckoned
可以量深浅的爱是贫乏的。

Once learning stops, vegetation sets in.
一旦学习停止，单调贫乏的生活就开始了。

lacking是什么意思：
adj. 缺少的
v. lack的现在分词；缺少

They lacked for nothing.
他们什么都不缺少。

lacking in impressiveness.
缺少令人难忘的特点。

People do not lack strength; they lack will
人们不缺力量,缺的是决心

The lack of rain aggravated the already serious lack of food.
缺少雨水加重了业已严重的食物缺乏。

It is a lack that should be remedied.
这是疏忽，得补救。

incomplete是什么意思：
adj. 不完全的，不完备的；未完成的

incomplete heat
不完全发情

Your installation may be incomplete.
你的安装可能未结束。

But incomplete adjuvant is adequate for subsequent injections.
但随后的注射则以使用不完全佐剂为宜。

The installer you are trying to use is corrupted or incomplete.
你正在安装的文件被破坏了或者不完整。

The clearing of rubbish and drains is still incomplete.
垃圾与污水的清理工作还未完成。