imperturbable
imperturbable[ˌɪmpəˈtəːbəb(ə)l]adjective- unable to be upset or excited; calm
不受打搅的,不易激动的,冷静的,沉着的
an imperturbable tranquillity.
一种不受打搅的宁静。
派生imperturbabilitynounimperturbablyadverb语源- late Middle English: from late Latin imperturbabilis, from in- 'not' + perturbare (see perturb)
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