Two cell layers (diploblastic) separated by a gelatinous mesoglea.
两层细胞(两胚层),
是凝胶状的
胶层。
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士(精简版) Dressed up in white flannels I went over to his lawn a little after seven and wandered around rather ill-at-ease among swirls and eddies of people I didn't know— though here and there was a face I had noticed on the commuting train.
晚上七点一过,我身穿一套白法兰绒
装走过去到他的草坪上,很不自
地
一群群我不认识的人中间晃来晃去——虽然偶尔也有一个我
区间火车上见过的面孔。
It wriggled, in the middle, a small hole appeared. It grew wider and wider, a second later they were facing an archway large enough even for Hagrid, an archway onto a cobbled street which twisted and turned out of sight.
开始移动,中间的地方出现一个小洞,洞口越变越大,不多时他们面前就出现了一条足以让海格通过的宽阔的拱道,通向一条蜿蜒曲折、看不见尽头的鹅卵石铺砌的街道。