我有事，不能和你相聚，請諒解。

熱心網(wǎng)友

Excuse me,I' m too engaged/busy to meet you.

熱心網(wǎng)友

I am so sorry for my absentation because i have something to do. Thanks for your consideration!

熱心網(wǎng)友

I am so sorry for my disappearance because i have something to do. Thanks for your understanding!

熱心網(wǎng)友

sorry,ican' ankyouforyourunderstanding.