Before the test flight, the instructor verified that the dual controls were functioning properly.

The driving instructor explained that the car had dual control, allowing either person to take the wheel during lessons.

Several high-profile politicians were scrutinized for holding dual citizenships while running for office.

The researchers discovered a dual-tropic strain of the virus that could infect both cell types.

To visualize the relationship between the dodecahedron and its dual polyhedron, students often draw the connecting lines between corresponding faces and vertices.

She bought a dual-SIM smartphone to keep her work and personal numbers separate.

I bought a dual SIM phone to keep my work and personal numbers separate.

The technician set up a dual boot laptop to run both Windows and Linux for testing.

I installed a dual-boot system so I can switch between Linux and Windows depending on the work I'm doing.

The new dual-band router provides stable connections for both older and newer devices.