BBC：ChinaBlasts: Casualties in Tianjinport city explosions
Time：Massive Explosions Rock Chinese City
CNN：Explosion rocks China's Tianjin; 17 killed
Guardian：Explosions in Chinese city of Tianjin kill at least 17 and injure hundreds
Casualty指意外事故，或事故伤亡人员。
事故报道中，“死亡和受伤”常用kill和injure，而不是die。例如“Two killed and one injured”等于Two were killed and one was injured.
Rock作动词，意思是“使震撼”，例如：
Three people were injured yesterday when an explosion rocked the factory.
昨天，三名工人在爆炸引起的工厂震动时受伤。
报道中的相关句子：
1. Massive explosions have hit China's northern city of Tianjin, leaving at least 17 people dead and hundreds more injured.
2. Hundreds of people have been injured and at least 17 killed after a series of devastating blasts sent a fireball hundreds of metres into the air at an industrial port in northern China.
3. A series of explosions shook the northern Chinese city of Tianjin late Wednesday, killing 17 people and injuring more than 300, according to officials and state media.
4. Two huge explosions rocked the Chinese port city of Tianjin,killing at least 17 people and injuring hundreds of others, officials said Thursd...
