天災は忘れた頃にやってくるを英語でなんと言うか？

忘れた頃とは、思いもよらない時、考えもしない時、のことです。disaster can strike when you least expect it. 太字の部分が大切です。0;02 when we least expect it, when we are least prepared, disaster can strike.

Earthquake Destruction
https://www.youtube.com/watch?v=Ia2b54srRZM  8:18 it only happens when you least expect it. and that is the art of the pickpocket. 30:23 pickpockets only strike when you least expect it. 注；them としたほうがいい。
Pickpocket King Bob Arno
https://www.youtube.com/watch?v=q1lf6AZIR5g  1:24 sometimes when you least expect it, fate has a way of giving us a second chance.
Love Is In The Air Official Trailer 1 (2013) - French Romantic Comedy HD
https://www.youtube.com/watch?v=X30_u86-x9k  0:02 disaster can strike when you least expect it.
Specialty Restoration Of Texas

参考リンク
https://www.youtube.com/watch?v=u-3jaassfEg  1:17 that proposal came in a least suspecting way. セスのプロポーズは思いもよらない方法だった。
http://bridge-english.blogspot.jp/2016/04/blog-post_20.html  天災を英語でなんと言うか？
http://bridge-english.blogspot.com/2024/02/blog-post.html   キンドルを活用する
http://bridge-english.blogspot.com/2024/02/20240204shokz.html   shokz は便利

練習問題解答
a-5301 when you least expect it
a-6380 when I least expected it
a-9015 when you least expect it.
b-1180 when you least expect them
b-2529 when you least expect it
b-5217 when he least expected it