dwa razy w tygodniu

Will the readers know whether you mean twice weekly or every two weeks?

Comment: Been using for 6years once to twice weekly.

Most of the schools welcomed parents hearing children read, from once or twice weekly to nightly.

In 1943, the paper scaled back publication to twice weekly.

The whole group meets twice weekly to discuss policy, personnel and the news.

It began operating from the start of December 1886 and ran twice weekly.

It aired twice weekly during the late summer and early fall.

A ferry comes twice weekly, stopping for only 20 minutes.

She went in twice weekly and kept his place in good order.

The steering committee will meet twice weekly to map out a strategy for increasing sales.