drain (something) away
phrasal verb with drain verb uk/dreɪn/ us/dreɪn/
（使）彻底消失;（使）流失
If energy, colour, excitement, etc. drains away, it disappears completely, and if something drains it away, it completely removes it.
Stretching out her tired limbs, she felt the tensions of the day drain away. 伸展一下疲惫的四肢，她觉得白天的压力也都随之消散了。