他们是一球形 、 环形或锥形的一部分.They are portions of a sphere, a torus or a cone.可以认为锥形的自由基比较活泼.It is argued that the pyramidal radical would be more reactive.并且锥体和锥形圈可以是双锥形的.Both the conic ring and the cone may be double ones....
The wombat and kangaroo are both marsupials in Australia.袋熊、袋鼠都是澳大利亚的有袋类动物.The autochthonal fauna of Australia includes the kangaroo.澳大利亚的本土动物包括袋鼠.Look，this is a joey. Is that kangaroo's baby？看那只小袋鼠。是那只袋鼠的孩子吗？A kang...
Judith was sitting in a rocking-chair by the window.朱迪丝正坐在窗户边的一张摇椅里。Chitty sat in his rocking-chair whittling wood.奇蒂坐在摇椅上削着木头。Her mother was sitting in the dark by the stove in her rocking chair.她母亲坐在炉边暗处的摇椅里。...
The traffic on the approach road slowed to a crawl.引路上车辆行驶缓慢。As he tried to crawl away, he was hit in the shoulder.他试图爬走时肩膀中枪了。I hated this man, his very touch made my skin crawl.我讨厌这个男人，他碰我一下我都觉得恶心。...