Task: Translation
Input (Chinese): 周二下午，一列载有至少250人，其中许多是儿童的客运列车在塞尔维亚和黑山境内出轨，掉进了一个山谷中。
Output (English): A passenger train carrying at least 250 people, many of whom were children, derailed in Serbia-Montenegro and drove into a ravine Tuesday afternoon.