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lifespans的音標(biāo)：...

n.（人或動物的）壽命( lifespan的名詞復(fù)數(shù) )，存在期，使用期，有效期...

Lifespans ranged from three years for the mice, to 23 or more for common backyard squirrels.動物壽命從3年(老鼠)到23年甚至更多(普通的庭院松鼠).They've been called Shorts , due to their small stature but also their brief lifespans.根據(jù)他們矮小的...