Officials in Indonesia say they fear there is little hope for more than 30 miners who remain buried underground after a gas explosion in a coal mine in West Sumatra.

• 参考翻译：印度尼西亚官员称，他们担心苏门答腊西部煤矿发生爆炸之后被埋在地下的30多名矿工生还的希望非常渺茫。