单词
retroactive
英 [retr??'?kt?v]
美[,r?tro'?kt?v]
基本信息
- adj. 追溯的；有追溯效力的；反动的
GRE畅通词汇
词态变化
副词:?retroactively;
中文词源
retroactive 有追溯力的
retro-,向后，往回，active,有效力的。
英文词源
- 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.
双语例句
- 1. The seagulls swirled in aerial combat over the barges.
- 海鸥盘旋在驳船上方，展开空中的搏斗。
来自柯林斯例句
- 2. a flock of seagulls
- 一群海鸥
来自《权威词典》
- 3. Seagulls followed in the wake of the huge ship.
- 海鸥尾随于大船之后.
来自《简明英汉词典》
- 4. The seagulls were wheeling in the air above the ship.
- 海鸥正在船上面盘旋.
来自《现代汉英综合大词典》
- 5. There is a seagull perched atop the mast.
- 有一只海鸥停歇在桅杆上.
来自《简明英汉词典》
retroactive相关单词