It rains on and off all day today.
It rained at about 6:30 this morning.
It was the time for my daughter to go to do ラジオ体操.
Anyway, she went to the parking lot of this apartment where to meet pupils living in here.
As a result of discussion between them, they decided to call off ラジオ体操 today.
And she came back to home soon.
At that time, I saw the sky by chance.
And I could see a big rainbow appeared on the west of the sky.
I shouted in spite of myself,
"Wow, how big rainbow it is! I haven't seen a rainbow for a long time."
I expected a little on the chance of happening something lucky.
But nothing have happened for the moment.
on and off 断続的に 時々
call off (予定された事の)中止を宣言する 中止する (約束などを)取り消す
by chance 偶然に 思いがけなく
in spite of oneself (~すまいと思っても)思わず 我知らず
on the chance of doing ~を当てにして ~かもしれない
for the moment いまのところ