| 1. | Too much oxygen can also block regeneration .
过多的氧也可阻碍再生。 |
| 2. | The secret of autotrophism lies elsewhere .
自氧性的秘密不在这里。 |
| 3. | Aerobic dance is conductive to the health .
有氧舞蹈有助于健康。 |
| 4. | Water consists of hydrogen and oxygen .
水由氢和氧二元素合成。 |
| 5. | Atom number eight is called oxygen .
原子序数为8的物质叫做氧。 |
| 6. | Both the r groups are alkoxy residues .
两个R基团都是烷氧基。 |
| 7. | Water is composed of hydrogen and oxygen .
水是由氢和氧组成。 |
| 8. | Oxygen toxicity is a complication of oxygen therapy .
氧中毒是氧疗的并发症。 |
| 9. | Epoxy structures can be similarly identified .
环氧结构也可以同样地加以鉴识。 |
