| 词汇 | tropic |
| 词根词缀 | 词源： c.1391, "either of the two circles in the celestial sphere which describe the northernmost and southernmost points of the ecliptic," from L.L. tropicus "of or pertaining to the solstice" (as a noun, "one of the tropics"), from L. tropicus "pertaining to a turn," from Gk. tropikos "of or pertaining to a turn or change, or to the solstice" (as a noun, "the solstice"), from trope "a turning" (see trope). The notion is of the point at which the sun "turns back" after reaching its northernmost or southernmost point in the sky. Extended 1527 to the corresponding latitudes on the earth's surface (23 degrees 28 minutes north and south); meaning "region between these parallels" is from 1837. Tropical "hot and lush like the climate of the tropics" is first attested 1834. 词根记忆： n. 回归线;[theT-s]热带地区This plant only grows in the tropics.这种植物只生长在热带地区. n. 回归线(太阳回转的地方)[trop=turn,表示"转"] 词根词缀： tropic tropic n 回归线(太阳回转的地方) trop=vturn,表示”转” trope n 转义,比喻(转出来的意义) tropic n 回归线(太阳回转的地方) tropical a 热带的(tropic+al) trophy n 奖品,胜利纪念品(经过轮番努力[turn again andagain]而得到的东西) |
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