To be involved in or take part in something; to become engaged with an activity or matter.
彼はボランティア活動に関わっている。
He is involved in volunteer work.
親として子どもの学校行事に関わるべきだという意見もある。
Some argue that parents should be involved in their children's school events.
事件に関わった疑いで数人が取り調べを受けている。
Several people are being questioned on suspicion of being involved in the incident.
To relate to or pertain to a matter; to have relevance or connection with something.
この問題は環境問題に関わる重要な論点だ。
This issue is an important point related to environmental problems.
個人情報に関わる規則は厳格だ。
Regulations related to personal information are strict.
To (seriously) affect or have a significant bearing on something; used when something has major consequences.
この決定は国の将来に関わる問題だ。
This decision is a matter that affects the country's future.
彼の健康は手術の成功率に関わる重要な要素だ。
His health is an important factor that affects the success rate of the surgery.
To be particular about or stick to something; to attach special importance or concern to some detail.
彼は材料の品質に関わって仕事をしている。
He works with a focus on the quality of materials.
デザインに関わる細部にまで注意を払った。
Care was taken even with the small details related to the design.