apex

n. 顶点，最高点

anyplace, anything, anything but, anyway, anywhere, aorta, apace, apart, apart from, apartheid, apartment, apartment block, apathetic, apathetically, apathy, ape, ape-man, aperient, aperitif, aperture, aphasia, aphasic, aphid, aphides, aphis, aphorism, aphoristic, aphrodisiac, apiarist, apiary, apiece, apish, aplomb, apocalypse, apocalyptic, apocalyptically, Apocrypha, apocryphal, apogee, apolitical,