perimetric a. 周围的

periphrasis [ peri- = around 绕;phrasis = speaking 说话=>“speaking around 绕着说话”→] n. a roundabout way of speaking or writing 迂回说法；迂回曲折的文字/“The wife of your father's brother”is a periphrasis for“your aunt”. “你父亲兄弟的妻子”是“你婶婶”的迂回说法。

periphrastic a. 回的，转弯抹角的；罗唆的

periscope [ peri- = around 周围；scope = an instrument for observing 观察仪器→]n. an instrument for seeing things around at a higher level 潜望镜 / People in a submarine use a periscope to see a view of the surface. 在潜水艇中人们用潜望镜观察海面动静。 

periscopic a. 潜望镜的；适于周览的

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