切开英语说作"incision". 这个词来源于拉丁语"incidere"，意思是"to cut into". 例如：

The doctor made a small incision in the patient's skin to remove the tumor.

医生在病人的皮肤上做了一个小的切口，以便去除肿瘤。

The incision was stitched up and covered with a bandage.

切口被缝合了起来，并用绷带覆盖。

The incision healed quickly and the patient was able to go home the next day.

切口很快愈合，病人第二天就可以回家了。

希望这些信息对您有帮助。