YOU SAID:
smooth seas never made a skilled sailor
INTO JAPANESE
滑らかな海では熟練した船乗りは生まれなかった
BACK INTO ENGLISH
Smooth seas did not produce skilled sailors
INTO JAPANESE
滑らかな海は熟練した船員を生み出さなかった
BACK INTO ENGLISH
Smooth seas did not produce skilled sailors
You've done this before, haven't you.