| 1. | Water may serve as a type of instability . 水可以作为不稳定性的象征。 |
| 2. | Water may serve as a type of instability . 水可以作为不稳定的象征。 |
| 3. | Trace element mixes serve as insurances . 微量元素只是作为一种保障措施。 |
| 4. | A mother's body serves as a reservoir . 母体可作为一种贮藏库。 |
| 5. | It could then have served as a trusty shield . 它就可以成为一个可靠的屏障。 |
| 6. | This compass serves as a protractor . 这个罗盘可用作分度规。 |
| 7. | The lake on the other side served as a guide . 另一边的湖成了判断方向的标志。 |
| 8. | The allusion served as a timely reminder to darnay . 这暗示即刻提醒了代尔那。 |
| 9. | The red flag serves as a reminder . 红旗可以作为一种标志。 |
| 10. | Perhaps i might serve as the husband of your daughter . 也许我可以做您的女婿。 |