YOU SAID:
As Ana was picking up the coins, Ari was getting ready.
INTO JAPANESE
アナがコインを拾うと、アリは準備をしていました。
BACK INTO ENGLISH
When Anna picked up the coin, Ali was preparing.
INTO JAPANESE
アンナがコインを拾ったとき、アリは準備をしていました。
BACK INTO ENGLISH
Ali was preparing when Anna picked up the coin.
INTO JAPANESE
アンナがコインを拾ったとき、アリは準備をしていました。
BACK INTO ENGLISH
Ali was preparing when Anna picked up the coin.
That didn't even make that much sense in English.