| 11. | investigate the market for a product, ways of increasing profits, etc |
| 对某商品, 增加利润的方法等作市场调查
|
| 12. | investigate the home, social and moral environment(s) of different classes of people |
| 调查各阶层人民的家庭环境、社会环境和周围的道德风气
|
| 13. | investigate a murder |
| 调查一起谋杀案
|
| 14. | investigate the matter minutely |
| 详细调查此事
|
| 15. | assiduously investigate |
| 刻苦地调查研究
|
| 16. | carefully investigate |
| 仔细调查
|
| 17. | comprehensively investigate |
| 全面调查
|
| 18. | conclusively investigate |
| 作结论性的调查
|
| 19. | intensively investigate |
| 深入细致地调查研究
|
| 20. | rigidly investigate |
| 严格地调查
|