Correct

粗通

/ cū tōng / 
Strokes

Example

As a Verb

have a rough idea (about); know a little (about); have a sketchy knowledge (of); know sth slightly

1
Cū
粗
tōng
通
yīngyǔ
英语

have a passable knowledge of English; know a little English

2
Cūtōngwénmò
粗通文墨

be just able to read and write