C1 adjective /ˌruː.dɪˈmen.tər.i/
Rudimentary
基本的; 初级的; 不完全发展的; 发展初期阶段的
Meaning
basic; elementary; undeveloped; in the earliest stage of development
Example
She has only rudimentary knowledge of French.
她对法语的了解只是初步的。