常見例句Churchyards often have sundials in them.教堂大院里通常設(shè)置日晷。Inventors created sundials, which indicate time by the length or direction of the sun's shadow, to track temporal hours during the day.當(dāng)時的發(fā)明家制造了日晷，利用太陽陰影的長度或角度，來測量白天真時的變化。 返回 sundials