n.旁观者,目击者;观众(等于spectator);
例句:
To sit quietly while the central body of water to an onlooker.
静静地坐在中央水体边,以一个旁观者的身份.
His manner is that of an onlooker.
他采取一种旁观者的态度.
One onlooker had to be restrained by police.
一个旁观者遭到了警察的制止。