B
生物医药大词典
by MedSci
菜单
词典
分类
百科
诗词
背单词
英文名
DeepEvidence ↗
确认登录状态…
例句 /
A person who is present at an event without participating in it.
A person who is present at an event without participating in it.
旁观者处于某事件发生的现场但没有参与的人