日光透过玻璃屋顶照入; 眼下这是室内惟一的照明.Daylight came in through its glass roof; this was now the only illumination.除了当俘虏之外,惟一的选择就是奋战至死了.The only alternative to being taken prisoner was to die fighting.约翰是她惟一的孩子.John is her only offspri...
There are many good automatic, semiautomatic, and hand feeding devices available commercially.市场上已有许多优良的自动 、 半自动和手工饲喂装置出售.Manual control or electric control of pressure , time , temperature or semiautomatic control.操作采用手...