Comparison between a normal costophrenic angle on the patient's right, and an obscured costophrenic angle (circled) on the patient's left, due to [[pneumonia with parapneumonic effusion.]]
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。