1.The ABC of engineering is very difficult.

1.程学入门很难。

2.The angles are equal,for ABC is equilateral.

2.角相,因为角形ABC是角形。

3.This paper, we study building model language-UML, building model tool-UNIFACE, and ABC analyzing method for stock management.

3.对统一建模语言UML、最新建模具软件UNIFACE和建立库存管理的ABC分析法了研究。

4.A serious amateur or a semiprofessional trader can use his time more efficiently with the help of the ABC Rating System (see next page).

4.认真的业余选手或半专业交易者可以利用ABC评分系统实现高效率。