| 释义 |
DEFINITIVE EXAMPLES 权威例句〔sundial〕An instrument that indicates local apparent solar time by the shadow cast by a central projecting pointer on a surrounding calibrated dial.日晷仪:指示某地太阳时间的一种仪器,通过一个中心突出指针在围绕刻有标准刻度的日晷上的阴影来指示时间美国传统〔umbra〕The completely dark portion of the shadow cast by the earth, moon, or other body during an eclipse.本影:由地球、月亮或其他天体在蚀的过程中造成的阴影中完全黑暗的部分美国传统 |