Once you make carrying guns legal, you let the genie out of the bottle.

旦拥有枪支被合法化，后果将不堪设想。

In some stories, genies are always found inside a lamp or bottle.

在些故事里, 灯里或瓶子中总是装有妖怪。

Now that genetically modified foods are on our supermarket shelves, the genie is out of the bottle and cannot be put back in.

转基因食品已经摆在了超市的货架上，放出魔瓶的妖怪再也无法收回。