quietening

v.

（使）安静( quieten的现在分词 )；（使）平静；（使）平息；（使）（感情）减轻

1. She tried to quieten herself down.
   她试图使自己镇静下来。
2. You must quieten down when the teacher comes into the classroom.
   老师来到教室时你们必须安静下来。

‘A QUIETENING EFFECT’?
‘Quietening’ stoma patients' fears
Quietening Circular Saws by Reducing Blade Vibration
Quietening a Quiet Engine-The RB211 Demonstrator Programme
Cognitive quietening: Turning down the mind's clock
A quietening effect?: The BBC and the Spanish Civil War (1936-1939)
Sun's imminent quietening will be bad news for lunar astronauts
Quietening the Voices: Making a Space for Music in Individual Music Therapy with an Elderly Refugee
Quietening the noise: an evaluation of noise reduction methods applied to aerial gamma-ray survey data
Active noise control for rotary equipment quietening e.g. passenger compartment of vehicle or craft