笑い声を表す音

a sound made by laughing

(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day

（天文学）天頂交差から天の赤道に沿って西方向に測られる天体の角距離。特定の場所と時刻での観測者にとっての赤経。