單詞
retroactive
英 [retr??'?kt?v]
美[,r?tro'?kt?v]
基本信息
- adj. 追溯的；有追溯效力的；反動的
GRE暢通詞匯
詞態變化
副詞:?retroactively;
中文詞源
retroactive 有追溯力的
retro-,向后，往回，active,有效力的。
英文詞源
- retroactive (adj.)
- 1610s, from French rétroactif (16c.) "casting or relating back," from Latin retroact-, past participle stem of retroagere "drive or turn back," from retro- "back" (see retro-) + agere "to drive, set in motion" (see act (v.)). Related: Retroactively.
雙語例句
- 1. The seagulls swirled in aerial combat over the barges.
- 海鷗盤旋在駁船上方，展開空中的搏斗。
來自柯林斯例句
- 2. a flock of seagulls
- 一群海鷗
來自《權威詞典》
- 3. Seagulls followed in the wake of the huge ship.
- 海鷗尾隨于大船之后.
來自《簡明英漢詞典》
- 4. The seagulls were wheeling in the air above the ship.
- 海鷗正在船上面盤旋.
來自《現代漢英綜合大詞典》
- 5. There is a seagull perched atop the mast.
- 有一只海鷗停歇在桅桿上.
來自《簡明英漢詞典》
retroactive相關單詞