purposeless

adj.

无目的的，无意义的；

1. Just as purposeless life goes to sea and sails but has no compass.
   漫无目的的生活就像出海航行而没有指南针。
2. Approached in the dark, the lights looked lonely and purposeless.
   在黑暗中走近时。那些电灯显得孤单而无意义。

Purposeless repeated acquisition time-lapse seismic data processing
Induction of purposeless chewing behaviour in rats by 5-HT agonist drugs
Pilocarpine-induced purposeless chewing behaviour in rats is dependent on intact central stores of 5-HT
A comparison of purposeless movements in psychiatric patients treated with antipsychotic drugs, and normal individuals.
Scopolamine fails to diminish chronic haloperidol-induced purposeless chewing in rats
The pharmacological characterisation of pilocarpine-induced purposeless chewing behaviour in the rat
Pharmacological characterisation of spontaneous or drug-associated purposeless chewing movements in rats
Drugs acting at D-1 and D-2 dopamine receptors induce identical purposeless chewing in rats which can be differentiated by cholinerg...
Assessment of the muscarinic receptor subtype involved in the mediation of pilocarpine-induced purposeless chewing behaviour.
Serotonin2C ligands exhibiting full negative and positive intrinsic activity elicit purposeless oral movements in rats: distinct eff...