onlooker

n.

旁观者，目击者；观众（等于spectator）；

复数：onlookers

1. His manner is that of an onlooker.
   他采取一种旁观者的态度。
2. The onlooker affirmed the fact to be true.
   这位旁观者断言这是事实。
3. He fell into the water, much to the entertainment of the onlookers.
   他跌进水中，旁观者大乐。
4. By the time the ambulance had arrived, a crowd of onlookers had gathered.
   救护车赶到时，围观的人已经很多了。

Improved Onlooker Bee Phase in Artificial Bee Colony Algorithm
“The Onlooker Sees the Game Best”?Divergent Perception of Bias in Self versus Others
ERbeta in breast cancer--onlooker, passive player, or active protector?
The Infant as Onlooker: Learning from Emotional Reactions Observed in a Television Scenario
RIP1's function in NF-kappaB activation: from master actor to onlooker.
To take responsibility or to be an onlooker. Nursing students' experiences of two models of supervision.
The Effectiveness of Fatal Vision Goggles: Disentangling Experiential versus Onlooker Effects.
The pain of a model in the personality of an onlooker: influence of state-reactivity and personality traits on embodied empathy for ...
Children's and Adults' Attributions of Emotion to a Wrongdoer: The Influence of the Onlooker's Reaction
Motor facilitation during action observation: topographic mapping of the target muscle and influence of the onlooker's posture