VOA慢速英语:Memorial Day: Arlington National Cemetery

短语讲解：

1. Up and down the hills are lines of simple white headstones marking the graves.

up and down 上上下下; 起落
例句：Children like bouncing up and down on a sofa.
孩子们喜欢在沙发上蹦蹦跳跳。

2. Arlington is on the land that once belonged to George Washington Parke Custis, a step-grandson of George Washington.

belong to 属于
例句：I belong to no party.
我不属于任何派别。

3. There are tens of thousands of spaces in the building, which is called a columbarium.

tens of thousands of 成千上万; 千百万; 千千万万
例句：These tasks brought to the fore tens of thousands of activists.
这些工作中涌现出成千上万的积极分子。

4. Some of the Old Guard soldiers placed flags in front of the graves of soldiers they knew, in Section 60.

in front of 面前; 在…前面; 当着…的面
例句：A doctor has the title 'Dr' in front of his name.
医生的名字前有“Dr”这个称呼。