lack (of sth)缺少（某物）；
a lack of money 缺乏资金；
lack sth缺少某物
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。
