这部书表现出对历史背景肤浅的理解。
The book shows only a superficial understanding of the historical context.
一位律师也提出了同样的观点：“虽然我没有法律背景——甚至没上过一门政治学课程——但我在一所最好的法学院里表现得很好。”
A lawyer made the same point, "Although I had no background in law—not even one political science course—I did well at one of the best law schools."
例如，电影制作人可能会选择在背景中加入救护车的警笛声，而在前景的声音和图像中表现一对争吵的夫妇。
For example, a film-maker might opt to include the background sound of an ambulance's siren while the foreground sound and image portrays an arguing couple.
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