1.yearly adj.每年的, 一年一度的

例句：The flower show is a yearly event in our town.
       我们镇上的花展一年举行一次。

      The earth makes a yearly revolution around the sun.
      地球每年绕太阳一周。

2.gain vt.vi.获得, 赢得

例句：The man gained a lot in the business, but he lost the respect of his friends.
      那个人做这买卖赚了很多钱, 但他却失去了朋友们对他的尊敬。

3.invasion n.武装入侵, 侵略, 侵犯, 侵入, 闯入

例句：The invasion of tourists brought life to the summer resort.
      大批游客涌入, 使这个避暑胜地热闹起来。

4.march vi.进军; 行进；齐步走

例句：The crowd of demonstrators marched along the main street.
      游行群众沿主要街道行进。

5.damage vt.vi.损害, 毁坏, 加害于

例句：Bone china damages easily.
      骨瓷容易破损。

      This cloth damages easily.
       这件衣服很容易坏。

6.protest  vt.vi.声明; 抗议

例句：They were formally protesting.
      他们正式提出抗议。

      He protested the decision made by the committee.
      他抗议委员会做出的决议。

7.hopeless adj.不抱希望的, 绝望的

例句：He gave way to hopeless grief as soon as he heard the bad message.
       一听到那个坏消息, 他立即陷入绝望的境地。

1.Many died of disease. After more than a month of digging, engineers decided that the canal would not work.

die of死于(疾病、过度悲伤等)

例句：People are dying of cancer more and more often.
      死于癌症的人越来越多了。

      My grandmother died of grief soon after her husband's death.
      祖父去世不久, 祖母就因悲伤过度而死了。

2.He also wanted to prevent the soldiers in Jackson from joining the soldiers in Vicksburg.

prevent from阻止, 防止

例句：My only idea was to prevent the woman from speaking.
      我唯一的想法就是不让那女人讲话。

      Cotton mittens will prevent the baby from scratching his own face.
      棉的连指手套使婴儿不会抓伤自己的脸。