lack n.可数,缺乏
lack of sth （物质上的,具体的） a lack of sth
a lack of money 缺乏资金
There was no lack of wolunteers. 志愿者不乏其人.
There is a lack of O+ type blood in the blood pool.
There is a lack of motivated teachers in our educational system.
There is a lack of good jobs in the last few years.
there is a lack of young talents in our company.
lack vt. 缺乏,不足,短缺 lack sth
He lacks confidence. 他缺乏信心.
Most losers lack the strength and patience to start all over again.
I like her but I lack the courage to ask her out.