BEC口语常用短语十五(2)

　　4.Layout drawing 总布置图纸

　　A: What's the importance of layout drawing?

　　B: The layout drawing shows a product in its environment.

　　A:总布置图纸的重要性是怎样的?

　　B:总布置图纸是描述在工作环境中的产品。

　　5.Part 零件

　　A: How many parts do you have in this seating system?

　　B: Two hundred fifty seven to be exact.

　　A:你这个座椅系统包含多少个零件?

　　B:精确的讲有257个。