rudimentary
/ˌruːdɪˈmentərɪ/adjective
1- involving or limited to basic principles基本的, 初步的, 起码的：
he received a rudimentary education.
他接受过基本教育。
1.1
- of or relating to an immature, undeveloped, or basic form未成熟的; 尚未发展完全的; 雏形的：
a rudimentary stage of evolution.
进化的雏形阶段。
派生词