im·per·tur·ba·ble /ˌɪmpəˈtɜːbəbəl $ -pərˈtɜːr-/ adjectiveadj CALMremaining calm and unworried in spite of problems or difficulties 从容镇定的,沉着的,冷静的 SYN unflappable
—imperturbably adverbadv
—imperturbability /ˌɪmpətɜːbəˈbɪləti $ -pərtɜːr-/ noun [uncountableU]