opportuneness

1. However, for the natural and man-made reasons, the opportuneness of such communication cannot come up with that of the writing on papers or carved on the stones.
   而由于人为破坏或大自然侵蚀的原因，题壁在传播的时效性上又不及书册和刻石。

noun

1. timely convenience

   Synonym:    patnesstimeliness