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- What were you doing when the earthquake happened? 地震发生时你下在干什么?
- I was quite ignorant when the earthquake happened. 我完全不知道地震在什么时候发生的。
- What was i doing when the 921 earthquake happened? 921大地震发生的时候,我在干什么呢?
- The earthquake happened just in time. 地震出现在最适当的时间。
- The deserted building tumbled down when an earthquake happened. 那座荒无人住的建筑物在发生地震时倒塌了。
- All hell broke loose in the city when the earthquake happened. 地震发生后，全城乱成一片。
- Dogs barked in chorus all over town before the earthquake happened. 地震发生前，全镇的狗都在吠叫。
- We were all sleeping soundly when the earthquake happened. 地震发生时,我们都睡得正香。
- A terrible earthquake happened in Tangshan City in 1976. 1976年唐山发生了严重的地震。
- When earthquakes happen, it seems that the sky and the earth are sinking. 地震发生的时候，天塌地陷。
- When earthquakes happen, two kinds of earthquake waves spread, a horizontal one and a vertical one. 地震发生的时候会发出横向和纵向两种地震波。
- He was buried under the collapsed house when the earthquake happened. 地震时，坍塌的房屋把他埋在地下。
- When the earthquake happens, It sounds like a train going under the ground. 地震发生时,好像是有火车在地下经过。
- On May the 12th, a terrible earthquake happened in Wenchuan, Sichuan province. 在5月12日，一个可怕的地震发生在四川省汶川。
- After Wenchuan big earthquake happened, all the people mourned in China. 摘要中国汶川大地震，震惊世界，中国举国哀悼。
- Strong earthquakes happened in the recent epoch. 全新世发生过强烈的地震。
- Even though earthquakes happen every day, an occurrence like the Madision River landslide does not happen very often. 像麦迪生河大滑坡似的事件却不是经常发生。
- Even though earthquakes happen every day， an occurrence like the Madison River landslide does not happen very often. 尽管地震天天都在发生，像麦迪生河大滑坡似的事件却不是经常发生。
- Even though earthquakes happen every day, an occurrence like the Madison River landslide does not happen very often. 尽管地震每天都在发生，像麦迪生河大滑坡似的事件却不是经常发生。
- She fall to brood about what have happen to her. 她开始沉思默想自己的遭遇。
