| 1. | This is essential for our mutual benefit .
这对我们的共同利益是必要的。 |
| 2. | It is necessary to delimit the anomaly clearly .
清楚地圈定异常是必要的。 |
| 3. | This kind of flexible perspective is needed .
采取这种灵活的看法是必要的。 |
| 4. | It is necessary that he should do so .
他这样做是必要的。 |
| 5. | Contrast is necessary for this explanation .
为了便于说明这个问题，对比是必要的。 |
| 6. | It is sometimes necessary to indulge a sick child .
迁就一个生病的小孩，有时是必要的。 |
| 7. | The apical membrane of the epithelial cells is apparently essential .
上皮细胞的顶膜显然是必要的。 |
| 8. | The hot water rinse was found to be indispensable to remove the soap .
为除去皂液，用热水冲洗是必要的。 |
| 9. | It is necessary to distinguish between the temperature of a body and its heat .
将物体的温度和热量区分开是必要的。 |
