the act of putting something inside something else, or adding something, especially words to something else

Scientists hope that the insertion of normal genes into the diseased cells will provide a cure. 科学家们希望在病变细胞里植入正常基因会成为一种新的有效疗法。

something you put inside something else or something, especially words that you add to something else

Any editorial insertions you make should be enclosed in square brackets. 编辑时增加的任何内容都必须括在方括号里。