词汇：
Levitate v. 悬浮 electrified v. 使带电
Levitation n. 悬浮 magnetize v. 使带磁
guideway n. 导向槽 line v.排列成行
propelb vt. 推进 underside n.下侧，下面
propulsion n. 推进 undercarriage n. 车盘
注释:
1. Maglev is short for magnetic levitation :maglev 是 magnetic levitation 的缩略词。
2. opposite poles attract and like poles repel each other: 异极相吸，同极相斥
3. AA-cell battery:5号电池
4. at least not the kind of engine used to pull typical train cars along steel tracks: 至少不是沿着轨道拉动典型的火车车厢的那种发动机。
5. the magnetic field created by the electrified coils in the guideway walls and the track combine to propel the train: 由嵌入导向壁内的电磁线圈产生的磁场加上轨道，一起推动火车前进。The magnetic field 和 the track 是句子主语，created by the electrified coils in the guideway walls 是过去分词短语，用作定语，修饰the magnetic field.
练习:
1. Paragraph 3
2. Paragraph 4
3. Paragraph 5
A The Main Components of the Maglev Train System
B High-speed Maglev due to Zero Friction
C The Working Principle of the Maglev Train
D Differences between Polarity and Magnetic Field
E Comparison of Maglev Trains with Traditional Ones
F Maglev with a Powerful Motor
4. Paragraph 6
5. Several countries in the world are using strong electromagnets
6. You can connect a wire to the positive and negative ends of a battery .
7. A unique system of magnetic fields is created by the coils
8. The frictionless maglev train enables you
A to develop a maglev train rail system
B To explain why maglev trains are faster
C to pull and push the train forward
D to create a magnetic field
E to experiment with the maglev train
F to travel from Paris to Rome in about two hours
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