Japanese phrase
今回は参加できません。 kon kai wa san ka de ki ma se n
Meaning
I won't be able to take part this time.
When to use it
States that the speaker cannot join on this occasion. It is a soft refusal, with no reason provided.
Example dialogue
今週のイベント、来ますか？ kon shū no i be n to ki ma su ka
Are you coming to the event this week?
今回は参加できません。すみません。 kon kai wa san ka de ki ma se n su mi ma se n
I won't be able to take part this time. I'm sorry.