| 单词 | perturbation |
| 释义 | perturbation (once / 2922 pages) 1n 2n When you're on an airplane with your friend who's terrified of flying, you'll be able to sense her perturbation, even if she doesn't say a word about how scared she is. The noun perturbation means "anxiety or uneasiness". Perturbation means "a state of agitation," or it can refer to whatever's causing the anxiety. Your brother's weird haircut could be the perturbation that's upsetting your mom at Thanksgiving dinner. It usually means a personal feeling of upset or nervousness, but perturbation can also be a physical disruption of some kind, like a perturbation in a river that makes the water become choppy and dangerous. In astronomy, perturbation is a change caused by the gravitational pull of a celestial body. WORD FAMILYperturbation: perturbations+/imperturbable: imperturbability, imperturbableness, imperturbably/perturb: imperturbable, perturbation, perturbed, perturbing, perturbs/perturbed: perturbedly, unperturbed/perturbing: perturbingly/unperturbed: unperturbedly USAGE EXAMPLESThey can be destroyed by slight perturbations from the environment—or by attempts to measure them. Science Magazine(Dec 01, 2016) "An individual's suffering is not proportional to his deformity, but to the perturbation caused to his harmony by living with his image." BBC(Aug 08, 2016) Whether —and how — perturbations of these programmes are related to growth faltering and the risk for and development of various diseases can also be investigated. Nature(Jul 05, 2016) 1 1n the act of causing disorder Syn|Hypo|Hyper disruption breakdown, dislocation the act of disrupting an established order so it fails to continue surprisal, surprisethe act of surprising someone disturbance the act of disturbing something or someone; setting something in motion 2n an unhappy and worried mental state Syn|Hyper disturbance, upset agitation a mental state of extreme emotional disturbance 3n a disposition that is confused or nervous and upset Syn|Hyper fluster discomposure a temperament that is perturbed and lacking in composure 4n activity that is a malfunction, intrusion, or interruption 2the term `distress' connotes some degree of perturbation and emotional upset Syn|Hypo|Hyper disturbance bother, fuss, hassle, trouble an angry disturbance magnetic storma sudden disturbance of the earth's magnetic field; caused by emission of particles from the sun activity any specific behavior n (physics) a secondary influence on a system that causes it to deviate slightly Hypo|Hyper variation (astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon) libration(astronomy) a real or apparent slow oscillation of a moon or satellite influence the effect of one thing (or person) on another |
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