本书所列单词共计1200个，加上各词的衍生词、同义词及反义词，则实际收录约2500词，均属于中上难度的词。读完本书，您的单词量当在5000词以上。

<注意>单词占一行，另起一行写句子，单词不需要大写，句子开头字母大写
alley The truck was too large to pass through the alley. apologize I apologized to her for stepping on her foot. dairy We could see lots of milk products in the dairy. discern I was not able to discern the road in the dark. jaw The meat was so tough that his jaws hurt from chewing it. limp After falling down the stairs, he limped for several days. pillar The roof of the porch is supported by brick pillars. potential He is regarded as a potential leader of our political party. refrigerator In summer we have to keep milk and meat in the refrigerator. skull He was knocked unconscious by a sudden blow on the skull. strategy Tactics refers to the disposition of armed forces in combat whereas strategy refers to the overall plan of a nation at war. trench The soldiers dug trenches to protect themselves against enemy fire or attack. undertake I will undertake the responsibility of feeding your dogs while you are away. He always undertakes more than he can do.
alley n.巷 这辆卡车太大了，无法穿过这条巷子。 apologize v.道歉 我因踩了她的脚而向她道歉。 dairy n.牛奶房 我们可以看到牛奶房里有大量奶制品。 discern v.辨认 我无法在黑暗中辨认道路。 jaw n.颚 那块肉是如此坚韧以致他的鄂由于嚼它而受伤。 limp v.跛行 从楼梯摔下来之后，他跛行了好几天。 pillar n.柱子 走廊的屋顶由几根转柱子支撑着。 potential adj.可能的；潜在的 他被认为是我们政党潜在的领袖。 refrigerator n.电冰箱 在夏天，我们必须把奶和肉保存在冰箱里。 skull n.头盖骨 他被脑袋上突然的一击打昏了。 strategy n.战略 战术是指在战斗中军力的部署，而战略是指作战期间一个国家整体的作战策略。 trench n.战壕 士兵们挖掘战壕来使他们自己不受敌人的炮火或攻击。 undertake v. 1.担任 2.尝试 当你不在时，我将承担起喂你的狗的责任。 他总是尝试去做超出他能力所及的事。