Rishe has kept a certain activity of hers secret from Arnold, but when he appears right in front of her, there's no escaping his notice. Later she learns that Michel believes Arnold fulfills every condition necessary to conduct a particular experiment.
And if that happens...
...وإذا حدث ذلك
Y en ese caso…
Y en ese caso…
E se succedesse...
E, se isso acontecer...
И тогда...