| 1. | A subset s of a ring a is a subring of a .
环A的子集S叫作A的子环。 |
| 2. | There was a ring of triumph in his voice .
他话里尽是胜利语气。 |
| 3. | All joined hands and formed a ring .
大家手拉着手，围成一个圈。 |
| 4. | He wears a ring on his middle finger .
他中指上戴着指环。 |
| 5. | The men were standing in a ring .
那些人站成一个圆圈。 |
| 6. | Give me a ring this afternoon .
今天下午给我一个电话。 |
| 7. | I will give you a ring tomorrow .
我明天给你打电话。 |
| 8. | I will give you a ring tomorrow .
明天我给你打电话。 |
| 9. | a ring homomorphism f: a→b is finite.
环同态f：AB叫做有限型的。 |
| 10. | He gave his wife a ring as a token of his love .
他送给妻子一枚戒指，做为爱情之象征。 |
