春天，草地上开满了黄水仙。In the spring, the meadow is a mass of daffodils.黄水仙是水仙属植物.The daffodil belongs to the genus Narcissus.哎呀，花园里的黄水仙开了，它们永远都是一道亮丽的风景。Well, the daffodils are out in the gardens and they're always a beautifu...
the hilltop town of Urbino建在小山顶上的乌尔比诺镇The castle lies on a hilltop.这个城堡座落在山顶上.The pavilion on the hilltop was a well - known landmark.山顶上的亭子是个著名的陆标....
a fringe of woodland一条林带The castle rises in solitary splendour on the fringe of the desert.这座城堡巍然耸立在沙漠的边际,显得十分壮美.This city is located on the southern fringe of the desert.这个城市处于沙漠南缘....
结果表明:钛酸酯类>硅烷类>硬脂酸类.Result organic titanate silane octadecanoic acid.采用内标法建立了原油中正构烷烃、生物标志物(甾 、 萜烷类)的分析方法.A method for analysis n - alkanes, steranes and terpanes in oil by internal standard method was established.目的:从中国红豆...