lack sth；
lack of sth （物质上的,具体的）；
be lacking in （某一方面,抽象的）
Research has been constrained by a lack of funds.
研究工作因经费不足而受限制。
I feel there is something lacking in my life.
我觉得我的生活中缺少点什么。
She is highly intelligent but her work lacks organization.
她聪慧绝顶，工作却缺乏条理。
