单词：airflow fence
单词：airflow fence 相关文章
It's tough to be a machine in the desert. Particles of dirty sands walk their way in to moving parts where they break turbine's motors pipes on other equipment.To avoid the costly warranty, researches are taking lessons from a desert native, the yell
Scientific American(二)月
By Greg Flakus Houston 16 October 2007 Mayors of several Texas towns on or near the US border with Mexico are filing legal actions to stop the federal government from building a planned security fence to deter illegal immigrants and drug smugglers. A
2007年VOA常速英语（十月）
on the fence maverick 各种语言都有一套特殊的政治词汇，美国英语也不例外。美国国会议员在通过各项法案时经常要投票表示自己的立场。但是，有些议员在
美国习惯用语
今天我们要学的词是on the fence。 On the fence, 犹豫不决的。 Many potential home buyers are still on the fence, waiting for the housing market to reach rock bottom, 很多想买房的人还在犹豫不决，等待房地产市场触底。
英语单词荟萃
今天我们再给大家介绍两个以sit这个字为主的习惯用语。大家都知道，sit就是坐。虽然我们要讲的两个习惯用语都以sit这个字为主，但是它们坐的地方却很不同。 现在我们先来讲第一个习惯用
美国习惯用语
Once stimulated, these muscles go to work and cause us to forcefully expel air from the mouth and nose. Or, in other words, we sneeze. Because the nose lining tends to swell when we lie down, making it even more sensitive to sneeze-causing particles,
英语时差8，16