Ultramarathon
超马拉松赛
🗣️ 情景例句
Active Sports is getting a solid reputation for having top of the line products.
Active Sports的产品质量上乘，而且取得了很好的声誉。
What is happening out there?
外面发生什么事情？
It later became apparent that rabbits were developing a degree of resistance to this disease,
后来，明显看出，兔子对这种疾病已产生了一定程度的免疫力，