level off

英 [ˈlevl ɒf]

美 [ˈlevl ɔːf]

（数字或数量）趋向平缓，趋于稳定; （飞机在爬升或下降后）进入平飞

柯林斯词典

PHRASAL VERB （数字或数量）趋向平缓，趋于稳定
If a changing number or amountlevels offorlevels out, it stops increasing or decreasing at such a fast speed.
1. The figures show evidence that murders in the nation's capital are beginning to level off...
  数据表明，该国首都谋杀案件的数量开始保持在稳定的水平。
2. Inflation is finally levelling out at around 11% a month.
  通货膨胀率最终稳定在每月11%左右。
PHRASAL VERB （飞机在爬升或下降后）进入平飞
If an aircraftlevels offorlevels out, it travels horizontally after having been travelling in an upwards or downwards direction.
1. The aircraft levelled out at about 30,000 feet.
  飞机在大约3万英尺的高度进入水平飞行。

verb