| 31. | observe speed law |
| 遵守限速交通规则
|
| 32. | observe instructions |
| 遵守指示
|
| 33. | observe grace before meals |
| 饭前做感恩祷告
|
| 34. | walk through the woods to observe nature |
| 步行穿过树林观察自然
|
| 35. | observe the following practices |
| 遵守下列惯例
|
| 36. | observe the principle of |
| 遵守…的原则
|
| 37. | observe great caution in doing sth |
| 十分谨慎地做某事
|
| 38. | observe a ceremony with great respect |
| 极庄重地举行仪式
|
| 39. | observe conditions |
| 观察情况
|
| 40. | keep [ observe ] Christmas |
| 庆祝圣诞节，过圣诞节
|