YOU SAID:

he thought, looking over the vast empty space, that surely there must be a reason that back home the ice cream is cheaper.

INTO JAPANESE

彼は広大な空の空間を見渡して、アイスクリームを安く買える理由があるに違いないと思った。

BACK INTO ENGLISH

He looked over the vast sky space and thought there must be reasons to buy ice cream cheaply.

INTO JAPANESE

彼は広大な空の空間を見渡し、安くアイスクリームを買う理由がなければならないと考えました。

BACK INTO ENGLISH

He looked over the vast sky space and thought that there must be a reason to buy ice cream cheaply.

INTO JAPANESE

彼は広大な空の空間を見渡し、安くアイスクリームを買う理由がなければならないと考えました。

BACK INTO ENGLISH

He looked over the vast sky space and thought that there must be a reason to buy ice cream cheaply.