新概念英语第四册在线练:Recording an earthquake

2023-07-27 10:50:00来源:网络

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  Recording an earthquake

  记录地震

  An earthquake comes like a thief in the night, without warning. It was

  necessary, therefore, to invent instruments that neither slumbered nor slept.

  Some devices were quite simple. One, for instance, consisted of rods of various

  lengths and thicknesses which would stand up on end like ninepins. When a shock

  came, it shook the rigid table upon which these stood. If it were gentle, only

  the more unstable rods fell. If it were severe, they all fell. Thus the rods, by

  falling, and by the direction in which they fell, recorded for the slumbering

  scientist the strength of a shock that was too weak to waken him, and the

  direction from which it came.

  地震就像夜间的小偷,不打招呼就来了。因此,有必要发明一种仪器,既不打盹儿,也不睡觉。有些装置非常简单。例如,有一种装置是由一些长短、粗细不同的木棒组成,就像九柱戏的木棒一样坚立着,一旦有地震,就会震动竖立在坚硬的桌上的木棒。如果地震轻微,只有不稳定的木棒倒下;如果地震剧烈,所有的木棒都会例下。由于地震太弱而未惊醒科学家时,木棒倒下的多少和倒下的方向就为科学家记录下了地震的强度和地震方向。

  New words and expressions 生词与短语

  earthquake

  n. 地震

  slumber

  v. 睡眠

  ninepin

  n. 九柱戏中的木柱

  rigid

  adj. 坚硬的

  delicate

  adj. 灵感的

  seismometer

  n. 地震仪

  penholder

  n. 笔杆

  legibly

  adv. 字迹清楚地

  drum

  n. 鼓状物

  wriggle

  v. 扭动

  bluebottle

  n. 绿头苍蝇

  graph

  n. 图表

  graphic

  adj. 图示的

  longitudinal

  adj. 纵向的

  transverse

  adj. 横向的

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