downer

n.

镇定剂，令人沮丧的人；

复数：downers

1. The title plant had been used as antalgesic and downer from the beginning of the 20th century up to now.
   早在20世纪,这种植物就是流行的止痛药和镇定剂,一直沿用至今。
2. What a downer that guy is!
   那家伙多让人泄气呀！
3. Getting into an auto accident today was a real downer.
   今天被卷入了一起交通事故中真是一件让人沮丧的事。

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Welfare of cattle during slaughter and the prevention of nonambulatory (downer) cattle.
Risk factors for downer cow syndrome.
Modeling the Hydrodynamics of Downer Reactors Based on Kinetic Theory
A simple approach to prognosis in the downer cow
Mid­west. Climate change impacts in the United States: The third national climate assessment
Measures of classroom quality in prekindergarten and children's development of academic, language, and social skills.
Attitudes to chemotherapy: comparing views of patients with cancer with those of doctors, nurses, and general public
Amplified femtosecond optical pulses and continuum generation at 5-kHz repetition rate.
Use of SMS text messaging to improve outpatient attendance.