Etna is Europe's most active volcano.埃特纳山是欧洲最活跃的火山。For several weeks, Italy's Mount Etna has been rumbling with volcanic activity.几个星期来, 意大利的蒙特·艾特纳的火山轰轰隆隆.How does Etna produce its fiery mix of magmas?埃特纳如何制造出它...
这种疼痛是由于血管的收缩而引起的。The pain is produced by constriction of the blood vessels.血管的突然破裂往往会造成外伤的痕迹.The rupture of a blood vessel usually cause the mark of a bruise.血管的排列有无数的变异.There are innumerable variations in the arrangemen...
The work will not be confined to the Glasgow area.此项工作不会局限于格拉斯哥地区。The previously free ( = not paid for ) distribution of text books will now be confined to students who are needy.以前免费发放课本,现在只给贫困学生.If they succeed, the be...
那名男子摸了摸他的帽舌。The man touched the peak of his cap.一般来说, cap有 帽舌,而hat有帽沿.Generally, caps have peaks and hats have brims.单筋式长帽舌安全帽,多用于工地 中层 领导及工人佩带.Mono - vein safety helmet with a long visor , usually for worksor middle - l...
测量电池是由绝缘的银阴极组成的.The measuring cell consists of an insulated silver cathode.旋转滑环是用片状塑料衬套与轴绝缘的.The rotating slipring is insulated from the shaft by a laminated plastic bushing.我们的电动工具都是双重绝缘的,并符合国际安全标准.Our electrical tools ...