| 41. | keep sb . Under observation |
| 监视[观察]某人
|
| 42. | an observation post |
| （军）观测所
|
| 43. | cultivate [foster] the power of observation |
| 培养观察力
|
| 44. | keen powers of observation |
| 敏锐的观察力
|
| 45. | an observation car |
| （有特大车窗的）游览车厢
|
| 46. | the most absurd specimen of mistranslation to come under my observation |
| 我看到的最荒唐的错译例子
|
| 47. | close observation and study of commercial and industrial conditions in the Pacific region |
| 对太平洋地区工商业状况的仔细观察和研究
|
| 48. | make discovery from observation |
| 通过观察发现
|
| 49. | an observation station |
| 观测站
|
| 50. | substitute experiment and observation for speculative theories |
| 用实验和观察代替纯理论
|