observatory
n.
"building for observing astronomical phenomena," 1670s (in reference to Greenwich), from French observatoire, from observer (v.); see observe.
〔李〕[observ（ ←observe）v. 观察；-atory →] n. a place for observing the heavenly bodies天文台
〔李〕[observ（ ←observe）v. 观察；-atory →] n. a place for observing the heavenly bodies天文台