Warning: file_put_contents(/www/wwwroot/ppbbbu/5356789.com/cache/3971c38f6b611cadf8d6023957c2f860.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/5356789.com/index.php on line 55 free radical英英字典_free radical剑桥英语解释_free radical柯林斯英文解释_零六五六深蓝词典
1. N-COUNTFree radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of aging, heart disease, and some cancers. 自由基[技术][usu pl]