level-off

基本解释

Low water level cut-off movement;
低水位切断动作；压力开关动作；
A combination of sport with leisure marks the development of harmonious society and increasing level of better-off life.
体育进入休闲，是社会和谐发展和小康生活质量提高的标志。
Concentrate our efforts on building more than 100 million people the benefit of a higher level of well-off society is the new century and new stage of the National People's goal.
集中力量，全面建设惠及十几亿人口的更高水平的小康社会，是全国人民新世纪新阶段的奋斗目标。

"What I have seen is a lot of kids really take off because they do have the one-on-one attention and they are up to grade level, if not beyond,as a result of having been in the program."

Stored in Spanish sherry casks since Wolrd War II and left to age for over six decades, the extravagant concoction boasts a diminished alcohol level of 42.5% — just above the cut-off level for scotch classification.
FORBES: The World's Most Expensive Scotch Whiskey
Per-minute charges will keep falling, but average monthly revenues per subscriber-down 35% over the past five years-will level off through 2000.
FORBES: Telecommunications
The current Range Rover Sport excels at driving on- and off-road to a level that few other SUVs do.
FORBES: 2014 Land Rover Range Rover Sport, A True Decathlete

If a changing number or amount levels off or levels out, it stops increasing or decreasing at such a fast speed.
If an aircraft levels off or levels out, it travels horizontally after having been travelling in an upward or downward direction.