颊窝毒蛇的毒牙是长的空心管子.The fangs of pit vipers are long, hollow tubes.只有四分之一的蛇具有毒液和毒牙.Venom and fangs are found in only a quarter of all known snakes.在蛇的进化史上,毒牙的出现是新的进步.A more recent advance in the evolutionary story of snakes i...
We'd be watching every plane coming in from Melbourne.我们会密切注意从墨尔本飞来的每架飞机。His trip to Melbourne had yielded a lot of information.他的墨尔本之行让他大开眼界。Other important Australian cities include Melbourne, Brisbane and Adelide...
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....