The school is not in a position to provide day-care after 4:00 pm.

Two important functions in nonassociative ring theory are the commutator and associator which, for elements a, b, c in a ring are defined respectively by [a, b] = ab − ba and [a, b, c] = a(bc) − (ab)c.

The formation of Botryllus multichimeras sets the 'group level' (the assemblage of several genotypes into one unified entity) as the key level at which natural selection acts.

He had a bum trip on that mescaline.