1. He came to know all of John's background.
   他逐渐了解了所有有关约翰的背景情况。
2. His background was in the fast - food business .
   他是搞快餐业出身的。
3. The house was framed by a background of trees.
   这房子掩映在树木之中。
4. I wish the seascape as my background.
   我喜欢海景作为背景。
5. The background is a bit dull.
   这背景有点单调。

　1个名词解释