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to flatline
01
持平, 停滞不前
to remain the same and fail to make any progress
Example
Sales figures flatlined after the initial surge in popularity.
Despite their efforts, the company 's growth rate flatlined over the past year.
The patient ’s condition flatlined, showing no signs of improvement.
02
平直线（某人）死去, 停止心跳
*** (of a person) die
