2. I don't know what this arena is, but I accept. Prepare to bleed, pig. 我不知道竞技场是什么，但是我接受。准备好放血吧，你这头猪。
3. Also, like all of science, it is an arena that includes the entire world rather than any one nation. 当然，与所有科学一样，它也是一个包容了整个世界而不是任一国家的竞技场。
英英解释
n.
1. a particular environment or walk of life
2. the central area of an ancient Roman amphitheater where contests and spectacles were held; especiall
3. a large structure for open-air sports or entertainments
4. a playing field where sports events take place
