| 1. | He had been a heavyweight prize-fighter . 他曾经是重量级职业拳击手。 |
| 2. | "better" is the comparative of "good" . “Better”为“good”之比较级。 |
| 3. | A clade may contain many grades . 一个进化枝可能包括许多进化级。 |
| 4. | They designed products that were world class . 他们设计出了世界级的产品。 |
| 5. | The above reaction is called second-order reaction . 上述反应称为二级反应。 |
| 6. | He is better suited to a job with older pupils . 他较适合教小学高年级学生。 |
| 7. | The disposal of the third grade spells difficulty . 出售三级品意味着有困难。 |
| 8. | We both were in the same senior society . 我们俩属于同一个高年级学生联谊会。 |
| 9. | He bounded up the wide steps with vigour . 他精神十足地跃上一级级宽阔的台阶。 |
| 10. | He at last won the world heavyweight title . 他终于获得了重量级世界拳击冠军。 |