"But symptoms typically last up to seven days for a normal infection, a noncomplicated infection with influenza, " he said.
CNN: Flu picks up steam across the U.S.
noncomplicated:
non- +? complicated
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。