英语翻译A tornado is a violently turning tube of air suspended f

英语翻译A tornado is a violently turning tube of air suspended f 英语翻译是课文翻译还有town twinningwhat is a tornado?龙卷风是什么?what is a h a tube of是什么意思啊? What is the function of a Durham tube? a tube of toothpaste用中文怎么说? Do you open a window -------turning on air conditioning? 英语翻译A stall occurs when the flow of air over a wing is broke 英语翻译Each of these sterilizers 3 comprises a tube of glass or Turning a 英译：The very heart of a TV is the picture tube. 英语翻译A section of tube approximately 100 mm in length shall b 英语翻译Find the linear speed that the bottom of a test tube mus