| 1. | Oxidation cannot occur without reduction .
没有还原反应就没有氧化反应。 |
| 2. | Nitrate reductase is a short-lived enzyme .
硝酸还原酶是短寿酶。 |
| 3. | The reduction cleaves the weak n-o bond .
这种还原反应致使弱的N-O键开裂。 |
| 4. | The oxygen cycle involves both oxidation and reduction .
氧的循环包含氧化和还原。 |
| 5. | Reductionism takes two general forms in biology .
生物学中的还原论表现为两大形式。 |
| 6. | Several reducible ions are present in the solution .
溶液中同时存在几种可还原的离子。 |
| 7. | Two-stage chromate reduction has been used at several plants .
一些厂已采用两段铬酸盐还原法。 |
| 8. | By oxidation-reduction reaction, copper is cemented into the iron .
经氧化还原反应，铜渗入铁中。 |
| 9. | It is resistant to borohydride reduction in alcoholic solvents .
在醇溶剂中，它不能被硼氢化物还原。 |
| 10. | Where are the heroes who have recovered from the destruction .
从毁灭中还原过来的英雄们又在哪儿呢？ |
