glacial
/ˈgleɪsɪəl; ?@ ˈgleɪʃl; `ɡleʃəl/ adj
1 (geology 地质)
(a) of the Ice Age 冰期的; 冰川期的; 冰河时代的; 冰河期的
the glacial era/epoch/period, ie the time when much of the northern hemisphere was covered by ice 冰期（亦称｀冰川期＇、 ｀冰河时代＇或｀冰河期＇）.
(b) caused by glaciers 冰川造成的
glacial deposits, ie rocks deposited by a moving glacier 冰川沉积
glacial flow, ie movement of a glacier 冰川运动.
2 very cold; like ice 寒冷的; 冰冷的
glacial winds, temperatures, etc 寒风、 低温
the glacial waters of the Arctic 北极寒冷的水域.
3 (fig 比喻) icy in manner; showing no sign of human emotion 冷若冰霜的; 不流露情感的
a glacial smile, manner, silence 冷冷的微笑、 举止、 沉默
glacial indifference, politeness 冷漠、 冷淡的礼貌.