VOA慢速英语:American History: General Pershing Leads Troops into Europe's Great War

still的用法

still作为连词时含有“尽管如此，可还是要”、“然而”、“不过”之意。例句：

     (1) Although we are very tired, still we shall work. 虽然我们很累，但我们还将工作。

     (2) She was thirsty, still she wouldn't drink. 她虽然渴了，但仍不喝东西。

     (3) I like cats; still I don't care to own one. 我虽然喜欢猫，但不愿意养猫。

     (4) This is a very unpleasant affair. Still, we can't change it. 这是件很不愉快的事，但是我们无法改变它。     此外，still可以与more连用，相当于much more，常译“至于……更不必说”。例句：

     She can speak English, still more Japanese. 她连英语都会说，日语更不在话下。

needed to fight是过去分词做后置定语，修饰amount。

2.In the end, however, neutrality was impossible.

in the end最后,终于

例句：They wrung the truth out of me in the end.
      最后他们硬逼着我说出了真相。

3.As promised, Lenin called for peace. So Russia signed its own peace treaty with Germany.

call for需要

例句：More work doesn't necessarily call for more men.
      增加工作不一定要增加人员。

      Your plan will call for a lot of money.
      你的计划需要许多钱。