Archcompetitor
n. 最大的竞争对手，头号竞争者
🗣️ 情景例句
Are you going to live with them?
您打算和他们一起住吗？
He has been to America.
他曾去过美国。[表示曾经有过的经验]
When she caught up with them, she saw that they had sat down and were going through the contents of the bag,
当她赶上他们时，发现他们已经坐了下来，正翻着包里的东西。