It seems that a gas tanker travelling north crashed into another vehicle in the neighbourhood of Ecatepec in the state of Mexico.

事故发生在墨西哥市的埃卡特佩克社区，看来是这辆向北行驶的油罐车撞到了另一辆车上。

This liquid gas is put in ships called gas tankers.

这种液态气体被放入称为油轮的船中。