n. 缺乏，没有 (常与介词of连用)
◆Many people can't afford to buy a house because of lack of money.
因为缺钱，许多人买不起房子。
vt. 缺乏，缺少，没有 (不用于被动语态) vi. 缺乏(＋in); 需要 (＋for)
◆The plants lack water; please water them, or they'll die.
这些植物缺水；请浇水，否则它们会死的。
◆He is young; he is still lacking in experience.
他年轻，还缺少经验。
