1. In the COBOL system, the information represented by a data item, arithmetic expression, or conditional expression. 在COBOL系统中，由一个数据项、算术表达式或条件表达式表示的信息。
2. The algorithm bas been realized by computer programming, and for any input regular expression, a simplified DFA equivalent to the regular expression is produced. 这个算法在计算机上已实现，并且对输入的任意正则表达式，都可以输出等价于正则表达式的简化DFA。
3. If the expression represents a class or structure, retrieve a list of member variables, as expression objects. 如果表达式表示类或结构，则将作为表达式对象来检索成员变量列表。
4. If the body of L is an expression, the type of that expression is the inferred return type of L. 如果L的主体是一个表达式，那么表达式的类型是从L的返回类型所推断的。
5. In addition, when translating participial expression, the use of idiomatic expression of English may allow the sentence to flow more smoothly. 翻译分词用语时，若能取用英文片语，句子将更为流畅。第一个英译句无误，第二个英译句亦正确。
