YOU SAID:
we need a long one that touches the water
INTO JAPANESE
水に触れる長いものが必要です
BACK INTO ENGLISH
We need long things to touch the water
INTO JAPANESE
水に触れるには長いものが必要です
BACK INTO ENGLISH
It takes a long time to touch the water
INTO JAPANESE
水に触れるには長い時間がかかります
BACK INTO ENGLISH
It takes a long time to touch the water
You've done this before, haven't you.