insertion
n. 插入，嵌入；（书、文章等中）添加的东西；（服装面料的）布饰，绣饰；（报刊的）插登广告；（器官的）附着
复数 insertions
例句
An examination is carried out before the insertion of the tube.
插入导管前先要进行检查。
《牛津词典》
If you add a word, put an insertion mark in the right place and write the missing word in the blank.
如果你要添加一个单词，在正确的位置做一个插入标记，然后把缺失的单词写在空白处。
The power supply connector can realize safe electriferous insertion in the power transmission of a power interface.
在电源接口的功率传输中，电源接头可以实现安全带电插接。
