1.謝絕邀請(qǐng)而不說(shuō)明原因被認(rèn)為是不禮貌的.(regard as)

熱心網(wǎng)友

1. decline invitation do not explain reason is consider as not courtesy.

熱心網(wǎng)友

Decline invitation and do not explain that reason is reason as , not courtesy .

熱心網(wǎng)友

Refusing an invitation without giving/explaining a reason is regarded as impolite.