頻回の

(1)frequently encountered; "a frequent (or common) error is using the transitive verb `lay' for the intransitive `lie'";

(2)頻繁に遭遇する

(1)a frequent (or common) error is using the transitive verb `lay' for the intransitive `lie'

(2)頻繁（一般的）な誤りは自動詞lieのつもりで他動詞のlayを使うことである