the lack of的意思是什么

造句：

1.There is always something you need to grow up, once you lack it you will be hungry for the rest of your life, even if you have all the wealth in the world, your little stomach is still empty.

总有一些东西就是你成长过程中所必须的,一旦缺乏你将终身因此感到饥饿,哪怕你拥有了整个世界的财富,你小小的胃仍然是空的。

2.Due to the lack of anti-gas measures, smoke workers dizziness, some vomiting

由于缺乏防毒对策,熏得职工头晕眼花,有的恶心呕吐。