本期内容：

Friday's catastrophic tsunami event on Sulawesi Island is a puzzle. As the emergency response gathers pace, scientists are scratching their heads to understand why it generated such big waves. The quake was what geophysicists call a strike-slip event, where the ground breaks horizontally. Strike-slip quakes can cause tsunami events but the 6m-tall waves that crashed ashore at Palu city surprised everyone.

catastrophic: adj. 灾难的；悲惨的
disastrous: adj. 灾难性的
tsunami: n. 海啸
Sulawesi Island: 苏拉威西岛
gather pace: 加速进行；加快步伐
pick up the pace: 加快步伐
scratch: vt. 挠；抓
wave: n. 海浪 vt. 向……挥手
geophysicist: n. 地球物理学家
geophysics: n. 地球物理学
geology: n. 地质学
geography: n. 地理学
horizontally: adv. 水平地
ashore: adv. 在岸上

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