играть важную роль

см. тж. занимать большое место в; иметь важное значение

• Iron enters, in an important manner, into the activities of living organisms.

• Use of this technique could have a profound impact [or could play a great role (or part)] in colorimetric analysis.

• Sensitivity is of paramount importance here.

• This value plays an important part (or role) in calculation of ...

• These propellants do not now play a large (or significant, or major, or vital) part in rocket propulsion.

• Insulin plays a leading role in the body's use of sugar.

• Sound waves have been vital to the transfer of information from one organism to another.