短语讲解：

1. Lee wanted to find out if that was true.

find out 发现; 使发作
例句：I'll find out the address,and ring you back.
我找到地址后再与你通电话。

2. A man with a gun entered the temple and started shooting as people in the temple were getting ready for a meal called langar.

get ready for（使） 准备好…
例句：We must get ready for the start.
我们必须做好开始的准备。

3. She wants viewers to learn about the people behind the food that has become a big part of life in the U.S.

learn about 获得，学得; 得知有关…的消息
例句：He took a course to learn about car maintenance.
他学习了汽车保养的课程。