Middleportn.米德尔波特(在美国；西经 82º05' 北纬 39º00')middleadj.中等的；中间的；中期的n.中间vt.放在中间；把 ... 对折middle-class revolution中产阶级的革命middle - high - order中高位middle age and old people中老年middle China's prosperityMiddle East Regional Area中东地区middle maxillary ligament蝶下颌韧带middle - aged employees中老年员工middle vocational schools中职学校middle and old aged folks中老年middle and early Triassic中、上三叠统