| 释义 |
〔syzygy〕Either of two points in the orbit of the moon when the moon lies in a straight line with the sun and Earth.朔望：月球轨道中月球与太阳或地球处于同一直线的两点之一〔periscope〕Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight.潜望镜：一种管状镜，包含折射物，如镜子和棱镜，用以观察与视线不在同一直线上的位置〔collinear〕Passing through or lying on the same straight line.共线的：经过或位于同一直线的〔syzygy〕The configuration of the sun, the moon, and Earth lying in a straight line.会合：太阳、月球与地球处于同一直线时的形状 |