VOA慢速英语:Hundreds of US Military Children Sexually Abused

短语讲解：

1. The Defense Department confirmed at least 1,584 cases of sexual abuse against military dependents over four years ending in 2014.

at least 至少
例句：In fact it requires at least n generators.
事实上，它至少要有n个元素。

2. A lack of transparency in military courts blocks a clear picture of child sex abuse, says the AP.

a lack of 缺乏，缺少
例句：Hard work can often make up for a lack of intelligence.
勤奋工作往往可以弥补智力的不足。