/æprə'beɪʃ(ə)n/ n. Syn. approval (同意,批准) expression of warm approval; praise She looked for some sign of approbation from her parents, hoping her good grades would please them.
/ɪm'pɜrvɪəs/ a. Syn. impenetrable (不能滲透的,不為所動的,不受影響的) impenetrable; incapable of being damaged or distressed The carpet salesman told Simone that his most expensive brand of floor covering was warranted to be impervious to ordinary wear and tear.