VOA慢速英语:Some American Indian Tribes Recording Faster Growth Than Rest of US

2. gambling n. 冒险;投机; 赌博, 赌钱
例句：The government is framing a new bill to put a cap on gambling.
政府正在制定新的法案以对赌博加以限制。

3. sharp adj. 轮廓鲜明的; 明显的; 清晰的
例句：There were sharp differences of opinion between the two.
两者的意见存在着明显的分歧。

4. enrollment n. 注册,入会,入学等的人数
例句：Middle school enrollments will peak this year.
今年中学入学人数将达到高峰。

5. split vt. 使分离;使不团结
例句：Disagreements split the party into rival factions.
意见分歧使该党分裂为对立的几派。

6. reduce vt. 缩减, 减少; 降低
例句：The driver reduced the driving speed.
司机减低了车速。

7. descent n. 世系,血统
例句：Many Americans are of English descent.
许多美国人有英国血统。

8. analyze vt. 分析, 分解, 解释
例句：The teacher tried to analyze the cause of our failure.
教师设法仔细分析我们失败的原因。

9. consistent adj. 一贯的, 始终如一的；一致的, 符合的
例句：His account of what happened was consistent.
他对于所发生事情的叙述前后一致。

10. tend vi. 易于; 倾向
例句：My grandmother tends to go to bed early every day.
我祖母每天通常比较早睡。