| 1. | Tom stood by his oath to his father . 汤姆遵守他给父亲立下的誓言。 |
| 2. | The net around yugoslavia was closing . 对南斯拉夫张下的罗网正在收紧。 |
| 3. | That is the goal we must set ourselves . 这是我们必须订下的目标。 |
| 4. | Most monocotyledons are hypogeal . 大部分单子叶植物都是地面下的。 |
| 5. | We take the downward direction as positive . 我取向下的方向为正。 |
| 6. | The dog disgorged the bone it had swallowed . 狗吐出吞下的骨头。 |
| 7. | This wall was built of cut stone . 这堵墙是用琢下的石头造成的。 |
| 8. | The aspirins soon took effect . 服下的阿司匹林药片很快见效了。 |
| 9. | He cut the fingernail to the quick . 他剪指甲剪了指甲下的肉。 |