• n. 近地點(diǎn)

peri-,在附近，-gee,土地，詞源同geology,Gaia.

perigee

perigee: see apogee

perigee (n.)

"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).

1. When perigee and perihelion coincide tidal range is at its greatest.

當(dāng)月球與地球到達(dá)它們的近地點(diǎn)和近日點(diǎn)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(dá)到它的絕對近地點(diǎn).

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(diǎn)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.

由于月歲差的關(guān)系, 這個時間比近地點(diǎn)不變的情況下所需之時間長.

來自互聯(lián)網(wǎng)