*Condensation trail or Contrail*
I've never seen or haven't paid attention before p:-)
We call this "飛行機雲,Airplane Cloud "; the finding of this new English made me a little happy. I thought it sounds more scientifically, even though made me feel a little funny as the word 'cloud' is not used (^^;) Happy to see for the first time; and my husband proudly (:-p) told me that the ones with Four lines are from jumbo jet plane.
Thank you SO much for stopping by♪