YOU SAID:

there must be a worm eating the food

INTO JAPANESE

食べ物を食べるワームがなければならない

BACK INTO ENGLISH

There must be a worm to eat food

INTO JAPANESE

食べ物を食べるにはワームが必要です

BACK INTO ENGLISH

To eat food you need a worm

INTO JAPANESE

食べ物を食べるにはワームが必要です

BACK INTO ENGLISH

To eat food you need a worm