1
in the auditorium
表示“在礼堂内”时，通常用介词 in。
There is a piano in the auditorium.
礼堂里有一架钢琴。
观众席；听众席
auditoriums — plural of auditorium
先理解核心含义，再看它在真实句子里的用法。
观众席；听众席
the area of a theater or concert hall where the audience sits
There is a piano in the auditorium.
礼堂里有一架钢琴。
用于公共集会或演出的大型厅堂
A large room for public meetings or performances.
剧院或音乐厅中观众坐的区域
the area of a theater or concert hall where the audience sits
剧院等中观众所在的区域
The space where the audience is located in a theater, etc.
The play hasn't started yet, but the auditorium is already full of people.
演出还没开始，但礼堂里已经坐满了人。
We found our seats at the back of the auditorium so we could see the whole stage.
我们在礼堂后排找到了座位，这样就能看到整个舞台。
More than five hundred chairs were set up in the school auditorium for the graduation ceremony.
学校礼堂为毕业典礼摆放了五百多把椅子。
表示“在礼堂内”时，通常用介词 in。
There is a piano in the auditorium.
礼堂里有一架钢琴。
说明容量时，主语用地点名词，谓语用 seat。
The auditorium seats 1,000 people.
这个礼堂能坐1000人。
with 短语作后置定语，修饰 auditorium，表示特征或所属。
The auditorium with the blue seats is on the second floor.
带有蓝色座位的礼堂在二楼。
Not this
The auditorium was clapping and cheering.
Use this
The audience was clapping and cheering.
auditorium 指‘礼堂’或‘观众席’，是场所；audience 才指‘观众/听众’。汉语‘听众’或‘观众’不能译成 auditorium，所以应改用 audience。
Not this
We went to auditorium to watch the play.
Use this
We went to the auditorium to watch the play.
auditorium 是可数名词，单数形式前通常需要冠词或限定词；汉语没有冠词，因此学习者容易漏掉 the。加 the 特指某个礼堂，句子才语法完整。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
在礼堂里
Please turn off your phones in the auditorium.
请在礼堂内关闭手机。
座无虚席的礼堂
The concert was held in a packed auditorium.
音乐会在座无虚席的礼堂举行。
坐满礼堂
Fans filled the auditorium to hear the speaker.
粉丝们坐满了礼堂来听演讲。
学校礼堂
The school auditorium is used for assemblies and plays.
学校礼堂用于集会和演出。
礼堂容量
The auditorium capacity is 1,200 people.
这个礼堂可容纳1200人。
当灯光暗下时，礼堂里一片寂静。
Pink Floyd's The Wall includes the lyric 'There's a silence in the auditorium as the lights go down.'
平克·弗洛伊德的《迷墙》中有这样一句歌词：“当灯光暗下，礼堂里一片寂静。”
Use auditoriums naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
audio（听）+orium（场所）：能听演讲、看演出的地方，就是 auditorium 礼堂的听众席。
语域：neutral 常见场景：theater、concert hall 该词通常为中性用法，多出现在剧院、音乐厅等正式场所的描述中；口语中泛指大型厅堂时也常见，但严谨来说多指观众席区域。
复数形式 auditoriums 或 auditoria 均正确。
Dictionary facts from ECDICT, WIKTIONARY.