How to translate 应景 into English？
应=match,景=occasion/circumstance
in the dictionary it says 'to do something for the occasion'.
It's like hanging a lantern in that Spring Festival is coming,then to hang the lantern is to 应景
Is there a single word in English to describe this?
And what about the adjective?Like you tell a joke which is exactly a reflection of your embarrassment,how do you describe the joke?
Occasional?

Question

How to translate 应景 into English？
应=match,景=occasion/circumstance 
in the dictionary it says 'to do something for the occasion'.
It's like hanging a lantern in that Spring Festival is coming,then to hang the lantern is to 应景
Is there a single word in English to describe this?
And what about the adjective?Like you tell a joke which is exactly a reflection of your embarrassment,how do you describe the joke?
Occasional?

Answer

The adjective "seasonal'' has the sense of 应景，as in ''seasonal decorations" or ''seasonal customs."  "Hanging a lantern during the Spring festival is a seasonal custom."