Unit 10 The world around us

  this is the original painting, and these others are copies. 這畫是原作，其他的是復制品。
    9. battery n. 電池 (a piece of apparatus for producing electricity, consisting of a        group of connected electric cells)
    our bus won't start because the battery is flat.我們的大客車發動不起來了，因為電池壞了。
    10. devote vt. 奉獻將（某人的時間、精力或自己）完全奉獻給某項特別的活動、事業、目標或某個人(to give or apply (one's time, attention, or self) entirely to a particular activity, pursuit, cause, or person.)
 he devoted all his time to his job. 他把他的全部時間都用在工作上了。
 this magazine is devoted to science. 這個雜志專門刊載科技文章。
 "after he has retired, he will devote himself to gardening.退休后,他將要致力于園藝。"
 everybody knows that our director is very devoted to his wife.
 人人都知道我們的廠長對妻子十分忠誠。
 he devoted a great sum of money to books.他們花了一大筆錢買書。
11. common adj.
    1) 共同的；共通的；聯合的；公共的 a common cup 公用杯子
    2) 常見的；常有的 snow is common in cold countries. 在寒冷的國家雪是常見的。
    3) 普通的；熟悉的 the common man 普通人
       the humorous joke is common property.這個幽默笑話大家都知道。
    4) 低俗的；質劣的；粗鄙的
      "i don't like him, for he's as common as muck.; he's as common as dirt."
      "他這人粗俗不堪,我不喜歡他。"
  12. valuable adj. 值錢的；貴重的; 有價值的
  a valuable diamond.貴重的寶石; valuable information; valuable advice.重大的消息；重要的建議; a valuable friend. 令人欽佩的朋友
      n. [常用復]貴重物品
      mary kept her valuables in a safe.瑪麗把她的貴重東西藏在保險箱里。
  13. reduce v. 縮減，減輕減少，如在范圍、數量上或程度上減少；降低(to bring down, as in extent, amount, or degree; diminish)
      they've reduced the prices in the shop, so it's a good time to buy.
      商店已經降低了商品的價格，看來現在是買東西的好時候。
    （與to連用）減少至
      the fire reduced the forest to a few trees. 大火把森林燒得僅剩下幾顆樹。
     （與to連用）變為，化為 to reduce the rocks to dust 把石塊碎成粉末
     （與to連用）強迫；迫使 she was reduced to begging. 她被迫乞討。