保持水平
level off / out
(停止升降而)保持水平
to stop rising or falling and remain horizontal
The plane levelled off at 1 500 feet.飛機在 1 500 英尺的高空保持水平飛行。
level off / out
(經過急劇的漲落後)保持平穩發展
to stay at a steady level of development or progress after a period of sharp rises or falls
Sales have levelled off after a period of rapid growth.銷售經過一段時間的快速增長後呈穩定狀態。
釋義來自《牛津高階英漢雙解詞典》第 9 版