The average of 4, 5 and 9 is 6.
4、5、9三个数的平均数是6。
我在9号高速公路上向南行驶。
I have a history class at 9 o'clock.
我9点钟有历史课。
礼拜仪式9点钟开始。
The next crew relief comes on duty at 9 o'clock.
下一批换班的员工9点钟接班。
At the first stroke it will be 9 o'clock exactly.
等到钟敲第一下时就是9点整。
There is no parking here between 9 a.m. and 6 p.m.
上午9时至下午6时此处禁止停车。
The city has 9 miles of such subterranean passages.
这座城市有9英里这样的地下通道。
At 9 p.m. the prisoners are locked in for the night.
晚上9点犯人被锁在牢房里过夜。
The centre is open from 9 a.m. to 6 p.m. on weekdays.
本中心星期一至星期五上午9点至下午6点开放。
The average response time to emergency calls was 9 minutes.
紧急求助电话的平均回应时间是9分钟。
They were married on August 9 in a civil ceremony in Venice.
他们于8月9日在威尼斯通过民政仪式结了婚。
His family raised the alarm when he had not come home by 9 p.m.
当他到晚上9点还没回家时，他的家人报了警。
She usually goes to bed at 9 pm.
她通常在晚上九点上床睡觉。
When he was 9, he liked painting.
他9岁时喜欢画画。
我们九点睡觉。
The shop opens at 9 a.m. every day.
这个店铺每天早九点开门营业。
Pick me up at the National Park at 9.
九点到国家公园来接我吧。
They had a mean age of about 9 years.
他们的平均年龄是9岁。
一个农民有9只鸡。
Were you at home at 9 o'clock last night?
昨天晚上9点钟你在家吗？
现在是9点整。
Finish the exercise on page 9 at home tonight.
今天回家，完成第九页的练习。
She taught all 9 grandkids how to swim in the pool.
她教了9个孙子如何在游泳池里游泳。
The writer wins an English speech contest in Grade 9.
作者在九年级时赢了一场英语演讲比赛。
The train on Platform 9 is not the 10:52 train to Jinan.
停在九号站台的火车并不是10点52分开往济南的火车。
Average office workers usually begin to work at 9 o'clock.
办公室职员一般9点开始工作。
The time is 9 o'clock and this is Marian Snow with the news.
现在是9点钟，我是玛丽安·斯诺，为您播报新闻。
The number 9 is pronounced as jiu in Chinese, which means "forever".
数字9在汉语中发音为 jiu，意思是“永久”。
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