Alchemists made useless efforts to change one kind of metal into another.翻译 要求包含两个从句谢谢了!能否说下中文句子中,有多个从句是怎么回事

alchemists made these symbols purposely obscure.they don't want people to know all this怎么翻译? Alchemists made useless efforts to change one kind of metal into another.翻译 要求包含两个从句谢谢了!能否说下中文句子中,有多个从句是怎么回事 made made in man-made made in Made in made in made in made in made in made in SWISS MADE made in made in made a made by made in