VOA慢速英语:Prevention, Treatment Efforts Have 'Broken' the Direction of AIDS

 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。

2.They say prevention efforts are responsible for much of the progress.

be responsible for为…负责,形成…的原因

例句：He should be responsible for that.
      他应该对此事负有责任。

3.But she noted that the populations most at risk are also those who have the least access to services.

at risk有危险

例句：The disease is spreading, and all children under five are at risk.
      这疾病在蔓延, 五岁以下的小孩都有危险。

have access to可以获得;进入

例句：Students must have access to good books.
      学生应该读得到好书。