to express worry or doubt about an issue
問題についての懸念や疑念を表明する (mondai ni tsuite no ken'en ya ginen o hyoumei suru)
"Activists raised concern about the pollution levels in the river."
"活動家たちは川の汚染レベルについての懸念を表明しました。" (katsudouka-tachi wa kawa no osen reberu ni tsuite no ken'en o hyoumei shimashita)
to collaborate or operate jointly across multiple regions or...
to remain as a feeling of worry, sadness, or fear
to withdraw from a project, agreement, or deal
to put all your effort, energy, or enthusiasm into something
to remove or carry something away with water
to not let negative emotions or situations affect you
