trail off
US /treɪl ɔf/
UK /treɪl ɔf/
1.
渐渐消失, 逐渐减弱
If a speaker or their voice trails off, they stop speaking or the sound of their voice becomes weaker and weaker and then stops.
:
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His voice trailed off as he realized his mistake.
他意识到自己的错误时，声音渐渐消失了。
•
The conversation trailed off into silence.
谈话渐渐消失在沉默中。