On her way to the east building library to find some reference books, Catarina joins up with the usual gang, and they decide to have a study session together. Then she opens a book that caught her eye... and it suddenly fills the room with light, then swallows her up along with Geordo and the others. Only Mary and Maria are left behind, so they cautiously open the book to try to rescue Catarina and the others trapped inside.
So basically, since this 
is like this, I do this...
...هذا يعني، بما أن هذه هكذا، علي فعل هذا
Da das hier so ist,
muss das hier im Grunde so …
En resumen, aquí debería hacer esto…
En resumen, aquí debería hacer esto…
Du coup, quand c’est comme ça,
je dois faire ça…
Quindi, in pratica, se questo 
è come questo, facendo così...
Então basicamente, como aqui
é assim, e aqui é assim...
Получается, что раз здесь так,
то вот тут — так…