飞机拉线，航迹消失过程非常有意思。
雷阵雨过后，求大气动力学解释，哈
Life is a song--Sing it.
Life is love--Enjoy it.
Life is a game--Play it.
Life is a sacrifice--Offer it.
Life is a challenge--Meet it.
Life is a dream--Realize it.
sTilLaliVe‘s photo album
Life is love--Enjoy it.
Life is a game--Play it.
Life is a sacrifice--Offer it.
Life is a challenge--Meet it.
Life is a dream--Realize it.
sTilLaliVe‘s photo album