翻译和例句：
(接近真空的) state mostly stops heat transfer (传递). When used to hold cold water, this also reduces... (间隔) between the two flasks. This near-vacuum (接近真空的) state mostly stops heat transfer (传递). When used ……
hour in a vacuum (真空的) tube before hitting the sand bank that was there to stop it, reported ……
(水泡)! Astronauts use a specialhose(软管) to take showers. And when they're finished, they use avacuum(真空的 ……
people love “sweets”. Americans clean the house with a “vacuum (真空的) cleaner”; British people call ……
people love “sweets”. Americans clean the house with a “vacuum (真空的) cleaner”; British people call ……
轨道). The tunnel would be vacuum (真空的) sealed so that the train would not be torn apart by the air if it traveled...通往太空的磁悬浮列车。词数 357 建议阅读时间 5分钟?教案和课件见网站 测试见7版TRAVELING to space sounds like something only an ……
model was put in a vacuum (真空的) tube for a test run on May 11 in Las Vegas. In the five-second test ……
或竞争中的任一方；impartial指观点看法不偏不倚，强调“公正的”。此外，neutral也可以用来形容着装打扮等“中性的”。vacuum n. 真空；空白adj. 真空的常见的搭配有：vacuum tube (真空管)，vacuum bottle(保温瓶)，vacuum cleaner(吸尘器)。 此外，它还可以用作动词，意为“用吸尘器打扫”，如vacuum the rugs(用吸 ……
可以从事研究的领域包括：理论研究法、教学实践法、科学研究法、文献研究法和反思研究法。当然，教师不可能在一个真空的环境中发展。每个教师都需要从他人那里汲取营养，同时也需要给他们提供参考。教师...应考虑使用哪种媒体以及如何利用媒体来突出教学重点并达到最佳的教学效果。2.解决教学难点。使用教学媒体可以有效地解决教学中的难点。现代教学媒体具有丰富的表现力，能够打破时空的限制，为师生解决教学难点提供有力帮助。3.提供教学资源。现代教学媒体不受时空的限制，可以 ……
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