Cách sử dụng
The word 'lack' means not having enough of something you need or want. You can use it in many situations, like you can say "I lack money" when you don't have enough money to buy something, or "He lacks confidence" when someone is not confident in themselves. The word is often used when talking about something that is missing or needed, like "The recipe lacked spices" means that the dish was not flavorful enough because the spices were missing. So, whenever you feel that something is missing, and you don't have enough of it, you can use the word 'lack' to express it.