鲟鱼和长嘴鱼都是硬鳞鱼.Sturgeons and gars are ganoid.硬鳞鱼在更早的地质时期数量巨大.Ganoid fishes swarmed during the earlier geological periods.陆龟的背甲高而呈圆盖形;后肢粗大, 形如象腿;前肢覆以硬鳞.Tortoises have a high, domed shell, heavy elephant - like hind legs, and...
你能扼要说明一下地区会议上提案的重点吗？Can you recap the points included in the regional conference proposal?他在会议上扼要地说明自己的想法.He presented his idea in outline at the meeting.他的话简短扼要.He's brief of speech....
The alliance had been forged in the crucible of war.这个联盟经受了战争的严峻考验.Yet now he was here, in extremis, to seek an alliance.然而现在他就在这里，在绝境中寻求联盟。Each member of the alliance agrees to take such action as it deems necessary, in...