free-fall

英[f'riːf'ɔːl] 美[f'riːf'ɔːl]
  • 自由投放
  • jump n.跳跃;跳动;上涨v.跳越;暴涨
  • parachute n.降落伞;缓降物;[动]翅膜v.跳伞;用降落伞空投
名词 free fall:
  1. the ideal falling motion of something subject only to a gravitational field

  2. a sudden sharp decrease in some quantity

【邻近词汇】