To ponder with utmost care and exert all one's efforts; to rack one's brains and devote oneself fully.
为了确保此次公益活动的圆满成功，所有工作人员都悉心竭虑，付出了大量时间和精力。
To ensure the complete success of this charity event, all staff members put their heart and soul into careful planning and execution, dedicating a significant amount of time and effort.
Era:
Ancient
Frequency:
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