(uninteresting because) unchanging
"a humdrum existence; all work and no play"
"nothing is so monotonous as the sea"
"the owl's faint monotonous hooting"
The monotonous smoothness of Byron's versification.
出自： Ld Macaulay
We are driving along a monotonous turnpike.
出自： A. Toffler
The food was..extraordinarily monotonous The only supplement to lentils..were bunches of small green grapes.
出自： E. Heath