释义：向前看，展望未来。
造句：
1.Would you have a look at the overpass in front of us.
你看前面的立交桥。
2.We must learn the lessons and look ahead, not backwards. 我们必须汲取教训,向前看,而不是向后看。
3.Backtracking only happens when something is unambiguously wrong in a lookahead.
只有当向前查找过程中发生明显 错误时，才会进行回溯。
4.There's no need for a tokenization phase, and lookahead assertions can be used for a limited degree of context-sensitivity.
没有必要再进行符号化解析，或者用于有限度上下文敏感的前向断言
5.Elaborates the meaning of molding decoration and virtual teaching, and lookahead position anddevelopment foreground of virtual teaching that in molding decoration.
阐述了装饰造型与虚拟教学的含义，并对虚拟教学在装饰造型中的前沿和发展作了展望。