hand effect

例句：

1. 1.The hand effect of the new policy is significant.
   新政策的手效应是显著的。
2. 2. The hand effect of this technique on the patient's recovery was remarkable.
   这种技术对病人康复的手效应是显著的。
3. 3. The hand effect of the new drug on the patient's condition was positive.
   这种新药对病人状况的手效应是积极的。