倒塌事故造成370余人死亡。
经现场初步勘察，倒塌事故可能是由违章施工所致。
According to an initial investigation, the accident may have been caused by a violation of construction procedures.
纽约的一家公司因被控告与波士顿大型深隧道的倒塌事故有关。
New York company is indicted in the fatal Big Dig tunnel collapse in Boston.
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