in extremis
adverb /ˌɪn ɪkˈstriːmɪs/
/ˌɪn ɪkˈstriːmɪs/
(from Latin, formal)- in a very difficult situation when very strong action is needed
在危急关头;在紧急情况下;在绝境 - at the moment of death
临终;弥留之际
词源Latin, from in ‘in’ + extremis, ablative plural of extremus ‘outermost’.