Sent_en: 2zh The problem began around 9:30 a.m CDT (UTC-5) at a loading dock, according to Dallas Fire Department Lt. Joel Lavender, and then spread to a trailer housing some 100,000 cubic feet (approximately 28,300 cubic metres) of gas.
Sent_yy: 据达拉斯消防局中尉乔尔·拉文德说，问题始于中央时区上午9点30分（协调世界时5点），发生在一个装卸码头，然后扩散到一辆拖车上，车内有大约10万立方英尺（约28300立方米）的天然气。