| 1. | It happened frequently in countries where sanitation was poor .
这在卫生条件不好的国家是常有的事。 |
| 2. | The primary reason is undoubtedly the rapid improvement in health conditions throughout the third world .
主要原因无疑是整个第三世界卫生条件的迅速改善。 |
| 3. | The environment is very clean and comfortable
宿舍周围卫生条件好，环境舒适。 |
| 4. | Sanitary conditions there quickly deteriorated
那里的卫生条件迅速恶化。 |
| 5. | He works hard to improve the sanitary condition of the slum
他努力改进贫民窟的卫生条件。 |
| 6. | He worked hard to improve the sanitary conditions of the slums
他努力改进贫民窟的卫生条件。 |
| 7. | Cholera epidemics spread by poor sanitation are common
流行性霍乱传播的一种普遍方式是卫生条件差。 |
| 8. | Epidemic disease is often in connection with bad sanitary conditions
流行病通常是和不良的卫生条件有关的 |
| 9. | Epidemic disease is often in connection with bad sanitary conditions
流行病通常是和不良的卫生条件有关的。 |
| 10. | Dairy plant - hygiene conditions - general guidance on inspection and sampling procedures
乳品厂.卫生条件.检验和取样程序通用指南 |
