指压迹
参考答案：
造影像上，龛影口部癌结节呈凸向龛影的弧形压迹，谓之“指压迹”，提示溃疡为恶性。
If you want to know the meaning of the word______, you’d better look it up in the dictionary.
A．mostly
B．exactly
C．nearly
D．hardly
管路图的标注方法及含义。
