rudimentary

1. ADJ Rudimentary things are very basic or simple and are therefore unsatisfactory. 简陋的[正式]

The earth surface of the courtyard extended into a kind of rudimentary kitchen. 院子的泥土地面延伸进一间类似简易厨房的地方。

2. ADJ Rudimentary knowledge includes only the simplest and most basic facts. 最基本的[正式]

He had only a rudimentary knowledge of French. 他只有最基本的法语知识。