arena 用英语:

The horse racing competition took place in the arena.

The Coliseum was the former arena in ancient Rome.

the political arena

Ring the police!

For the sake of completeness, let us mention that the ring R - considered as a module over itself - has submodules of arbitrarily large finite length.

In particular, the endomorphism ring of M is a commutative local ring.

The hand has five fingers: the thumb, the index finger, the middle finger, the ring finger, and the pinky.

I think we've met before, but if I don't ring a bell, maybe I'm wrong.

Time has no divisions to mark its passage, there is never a thunderstorm or blare of trumpets to announce the beginning of a new month or year. Even when a new century begins it is only we mortals who ring bells and fire off pistols.

If you want to marry me you need to get on your knees and give me a ring.

You'll have it in June? 'June bride' has a nice ring, doesn't it?

Kevin has bought a diamond ring and is going to pop the question to Kim tonight.

In Japan the ring shaped ones came into use first so they're also often called "contraceptive rings".

[rɪŋ] ring

My sister always rings me when she has a problem.

Is it OK for me to remove my wedding ring and go to a dating party when I have a pregnant wife?

As I was eating lunch, Kichiya came to me and, while she was serving my meal, she was toying happily with her ring set with a gleaming jewel.

If you need anything, ring my bell any time. I'll be glad to help you.