Correct

略知一二

/ lüè zhī yī èr /
Strokes

Definition

slight knowledge of sth/to know very little about a subject/a smattering

Example

Definition

have only a smattering knowledge of; know only a little about; smatter; have a rough idea of

1
duì
德语
lüèzhīèr
略知一二
  

He knows a smattering of German.