"point at which a celestial body is nearest the Earth," 1590s, from Modern Latin perigeum (15c.), from Late Greek peregeion, used by Ptolemy as a noun, properly neuter of adjective perigeios "near the earth," from peri ges, from peri "near" (see peri-) + ges, genitive of ge "earth" (see Gaia).
雙語例句
1. When perigee and perihelion coincide tidal range is at its greatest.
當(dāng)月球與地球到達它們的近地點和近日點的時間恰好重合時,就會引起最大的潮汐.
來自辭典例句
2. The Moon reaches its absolute perigee once a year.
月球每年有一次達到它的絕對近地點.
來自辭典例句
3. The time between two passages at the perigee ( of the Moon ).
月球連續(xù)兩次經(jīng)過近地點所需的時間.
來自互聯(lián)網(wǎng)
4. Due to lunar precession , this time is longer than that if the perigee's position was fixed.