kinematic pair

They waved down a pair of responding cops who followed the alleged cop killer into the subway.

He stood, with the air of a hero, both arms extended towards the amazed pair of lovers.

Under the long lashes of low lids a pair of eyes black and insolent set off the haughty lines of her scarlet lips.

Here the pair reached the "Dun Cow" and retired to their respective quarters.

Since words have different meanings, we may sometimes find that a pair of words exemplify all three Laws, as plough and sword.

The opposite of these two methods of rote learning is my method, which injects an active process between each pair of words.