Cách sử dụng
When we use the expression "at a loss", it means that we are struggling to figure something out or don't know what to do in a certain situation. It's often used when you don't have a solution or don't understand something well. For example, if you are asked a difficult question and can't answer, you might say "I'm at a loss for words." You can also use it when you are in a difficult situation and don't know how to proceed. For instance, "I'm at a loss about what to do next after my computer crashed and I lost all my files."