Cách sử dụng
The word 'expend' means to use up or spend something like time, energy or money. It indicates that you have used something in order to achieve a goal or do a task. For example, you can say 'I expended a lot of energy running the marathon', which means that you used a lot of energy in order to complete the marathon. This word is often used in formal or academic writing, so it is important to remember how to use it properly.