extrnn.外部的(extern的缩写)
EXTabbr.扩展（=extension）abbr.外面的；外部的（=exterior）abbr.额外的（=extra）
Extensible Language Facility可扩展语言设备
extensioin per contiguitatem[医] 邻接性蔓延
extemal deviation hypothesis外部特异性假设
extremum of a fuzzy function模糊函数的极值
extensor digitorium communis指(趾)总伸肌
extemporaneous accompaniment即兴伴奏
Exton's quantitative reagent折返剥露
extroversion/introversion内向与外向
extroperitoneal pneumography腹膜外气造膜(术)
"his ad-lib comments showed poor judgment"
"an extemporaneous piano recital"
"an extemporary lecture"
"an extempore skit"
"an impromptu speech"
"offhand excuses"
"trying to sound offhanded and reassuring"
"an off-the-cuff toast"
"a few unrehearsed comments"
"he spoke extemporaneously"
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