名詞 insertion:

1. a message (spoken or written) that is introduced or inserted
   同義詞：interpolation
2. the act of putting one thing into another
   同義詞：introduction, intromission

1. A printed or typed document which usually has blank spaces for the insertion of information.
   通常具有空白位置、以插入信息的一種預(yù)先印刷或打好字的文檔紙。
2. A book with blank pages for the insertion and preservation of collections, as of stamps, photographs, or autographs.
   剪貼簿，影集，簽名薄有空白頁以便插入或存放收集品，如郵票、照片或簽名的本子
3. He put a coin into the insertion slot.
   他往投幣孔投入一枚硬幣。
4. There are many insertions of advertisement in the newspapers.
   報紙上有很多插入的廣告。

in.ser.tion

n.（名詞）
The act or process of inserting.
插入：插入或嵌入的行為或過程
Something inserted, as an ornamental strip of lace or embroidery inserted between pieces of fabric.
嵌飾的東西：嵌入的物品，如嵌入織物中的裝飾性花邊或繡花
Anatomy The point or mode of attachment of a skeletal muscle to the bone or other body part that it moves.
【解剖學】 附著處：骨骼肌肉與骨或它所帶動的身體其他部分的連接點或連接方式
Genetics The addition, as by mutation, of one or more nucleotides to a chromosome.
【遺傳學】 染色體突增：由于突變而使染色體增加一個或多個核苷酸

【引伸】
inser.tional
adj.（形容詞）