A gentle fog envelops the harbor every October morning.

The thick fog acted as an enveloper, wrapping the harbor in a ghostly silence.

During mitosis, nuclear envelopes disassemble to allow spindle fibers to access the chromosomes.

At the Lunar New Year celebration, red envelopes are distributed to children as a symbol of good luck.

The engineering team reviewed the flight envelopes before the test flight.

The designer analyzed several kinematic envelopes to ensure the mechanism would not collide with surrounding parts.

Please make sure the window envelopes are properly aligned before mailing the invoices.

Please put the signed contracts into the manila envelopes on my desk.

Architects must consider building envelopes when designing for energy efficiency and occupant comfort.

Scientists examined the viral envelopes under an electron microscope to understand how they enter host cells.