con la loro ricerca

with their research

→ con
phrase Rare #40,884
with their research The possessive loro means “their” and does not change form. The adjective or participle before this phrase changes according to the gender and number of the people being described, as in impegnate/impegnati or occupate/occupati.
IT: Stanno facendo progressi con la loro ricerca.
EN: They are making progress with their research.

Sono impegnati con la loro ricerca.

They are busy with their research.

Sono occupati con la loro ricerca.

They are busy with their research.

Sono occupate con la loro ricerca.

They are busy with their research.

Sono impegnate con la loro ricerca.

They are busy with their research.