As a gift for Hell's celebratory party, God orders the designers to come up with
"an animal that can be used in Hell's attraction and also sent to Earth".
Yokota's idea of making it something that "surprises angels" is also tacked on,
which really puts the team's abilities to the test...
And something similar 
to the birds' air sacs—
...وشيءٌ مشابه بحواصل الطير هذه
Und etwas, das den Luftsäcken
der Vögel ähnelt, …
Y algo similar a estos sacos…
Y algo similar a estos sacos…
Quant au tyrannosaure…
E qualcosa di simile ai sacchi aeriferi degli uccelli...
E algo similar aos sacos
de ar dos pássaros...
И органы, похожие на воздушные мешки...