沉住气chén zhù qì在情况紧急或感情激动时保持镇静{keep calm at a critical moment or at a moment of excitement; keep cool; be composed}: 沉得住气{be able to hold oneself under control and keep cool}|沉不住气{be unsteady; easily flare up}|别慌,千万要～。{Keep calm; don't lose your head.}