出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第126页（203字）
眼看着落在后面，赶不上，例他的游泳技术这几个月来进步神速，我们现在只能瞠乎其后了。
He has made great progress in his swimming these last few months．It looks like we will ncver catch up with him．