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.
