名词庆祝; 惯例; 遵守，奉行; （宗教的，正式的）仪式

1. 遵守：observation#观察 | observance#遵守 | helpless#无助的

2. 遵守惯例：observance 习惯 | observance 遵守;惯例 | observance 遵守惯例

3. 惯例：observable condition 可观测条件 | observance 惯例 | observance 遵守

4. 习惯：observance of good seamanship 遵行良好船艺 | observance 习惯 | observance 遵守;惯例

1. （对法律、习俗等的）遵守，奉行
The observance of something such as a law or custom is the practice of obeying or following it.

e.g. Local councils should use their powers to ensure strict observance of laws.
地方政务委员会应当行使权力以保证人们严格遵守法律。

noun

1. the act of observing
taking a patient look

Synonym: observationwatching

2. conformity with law or custom or practice etc.

Synonym: honoring

3. the act of noticing or paying attention

e.g. he escaped the notice of the police

Synonym: noticeobservation

4. a formal event performed on a special occasion

e.g. a ceremony commemorating Pearl Harbor

Synonym: ceremonyceremonialceremonial occasion