Transport proteins which allow some materials to pass through but not others are used for these functions.

We passed several others that would have done as well.

We passed several beautiful islands, some of them private and others with places to land and swim.

On their way here, they had passed several others, sometimes singly, other times in groups of two or three.

Keeping to right side (or left side) except to pass others, where passing is allowed.

Wieroos flapped above them and several times they passed others walking or sitting upon the roofs.

He passed others on their way to work.

More important, with only her touch, she would be able to pass unto others the power to heal themselves.

As she walked, she passed others walking around, either individually or in groups.

That is, they can block some frequencies and pass others.