Frontiers
n. 边界( frontier的名词复数 ); 边境; 开发地区的边缘; 尚待开发的领域
🗣️ 情景例句
But I haven't finished telling you
但我还没有对你说完
The best fish swim near the bottom.
好鱼游水底。
That's right.we have to work out the final price.
是的，我们得把最后的价格敲定。