superficial

His knowledge of the subject is superficial.

彼のその科目に対する知識は表面的だ。

His comments were superficial and lacked depth.

彼のコメントは浅薄で深みがなかった。

The damage to the car was only superficial.

車の損傷は表面だけだった。

The changes made were superficial and did not address the core issues.

行われた変更は深みがなく、核心的な問題には対処していなかった。

The cut on his arm was superficial and didn't require stitches.

彼の腕の切り傷は浅く、縫合の必要はなかった。