沃尔什露齿一笑。Walsh bared his teeth in a grin.她露齿一笑表示高兴.She grinned her delight.她看起来是客客气气的,一旦脾气发作起来,就张牙露齿不那么客气了.She had always seemed friendly until suddenly she began to show her teeth....
The brontosaurus was one of the largest of all dinosaurs.雷龙是所有恐龙中最大的一种.A two foot - long drill bit tipped the end of a brontosaurus - like creature's long neck.一枚两英尺长的钻头在一头 状 似雷龙的大家伙的长颈一端咬了一口....
Typical framed structures are beams, grids, plane and space frames or trusses.典型构架结构为梁 、 格栅 、 平面的和空间的框架或桁架.Such trusses are called simple trusses.这样的桁架称为简单桁架.The truss comprises four plane trusses each two panels and eac...