at the fore;in front of;to the fore;ahead;in front ;
例句:
The old woman walked slowly, and the children ran on in front.
那位老妇人慢慢地走, 小孩子们跑在前面.
Tom was leading, a rifle slung over his back.
汤姆走在前面,背上挂着一支步枪。
Some difficulties lie behind us, but greater ones lie ahead.
有些困难已经克服了, 但更多困难还在前面.