Cách sử dụng
The word 'frontier' is often used to describe the boundary or limit of a particular area or activity. It can also refer to the regions of a country that are not yet well-developed or settled. In simple language, you might use the word 'frontier' to talk about exploring new territories, pushing the boundaries of what is possible, or venturing into uncharted territory. For example, you might say that scientists are exploring the frontiers of space, or that a new technology is pushing the frontier of what is possible in medicine.