Primer

入門書 /入门书

rùménshū

(introductory textbook)

底漆

dǐqī

(layer of priming substance)

底火

dǐhuǒ

(substance used to ignite a fire)

引子

yǐnzi

(biology: molecule required for replication of DNA)

引物

yǐnwù

(biology: molecule required for replication of DNA)

識字課本 /识字课本

shìzì kèběn

(children's book introducing basic literacy)

識字課本 /识字课本

shìzì kèběn

(introductory textbook)