A Minnesota school receptionist has been killed in an explosion that partially levelled the building and injured nine others, officials say.
据官方声明，明尼苏达州一学校的接待员在一场爆炸中丧生，该爆炸几乎将大楼夷为平地，另有九人在事故中受伤。
Ruth Berg, 47, who was engaged to be married, was found by search crews in the rubble of Minnehaha Academy in the city of Minneapolis.
搜索人员在明尼阿波利斯市的明尼哈哈学校的残砖断瓦中发现了47岁的露丝·伯格，她本来很快就要结婚了。
One other person, 82-year-old school janitor John Carlson, is still missing after Wednesday morning’s blast.
82岁的学校看门人约翰·查尔森在周三早上的爆炸之后至今下落不明。
Investigators suspect natural gas caused the explosion.
调查人员怀疑是天然气造成了该场爆炸。
School officials said in a Facebook post that Ms Berg had worked there for 17 years.
学校的工作人员在脸书上说露丝·伯格已经在该校工作了17年。
"As our receptionist, she welcomed everyone with a smile and was always willing to go the extra mile to help our students, families, and staff," they wrote.
“作为我们的接待员，她总是用微笑迎接每一个人，而且总是不遗余力的帮助我们的学生、家人和工作人员”，他们写道。
"She will be greatly missed. Please keep Ruth’s family, and our school community, in your prayers."
“我们会很想念她的。请大家在向上帝祷告的时候祈祷露丝的家人以及我们的师生社团平安顺遂。”
Rescuers plucked three people from the roof after the explosion, which set part of the building ablaze.
救援人员在爆炸发生后从屋顶拉出三个人，这导致了部分建筑物的燃烧。
Medics said three people were in a critical condition, four in a serious condition and two had "minor trauma".
医院方面称有三人情况危急，有四人伤势严重，有两人受“轻微创伤”。
Mr Carlson, the missing janitor, was a 1953 graduate of Minnehaha Academy who also sent his children there, reports the Minneapolis Star Tribune.
据明尼阿波利斯星坛报报道，失踪的学校门卫查尔斯先生是明尼哈哈学校1953年的毕业生，他还把自己的孩子也送入这所学校念书。
He began his caretaker job at the school in 2003 and was known for his generosity in handing out ice cream bars to staff and students.
他于2003年起开始在学校担任看守工作，他慷慨的为人大家都有目共睹，他常向工作人员和学生发放冰棍。