科学素养与生活应用·英语30篇（5）

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磁悬浮如何实现城市交通的无摩擦运行

Magnetic levitation, or maglev, lifts trains using powerful electromagnets.
These magnets repel the train from the track, eliminating physical contact and friction.
Because there is no wheel-rail contact, maglev trains accelerate faster and run quieter.
Energy efficiency improves since less power is wasted overcoming mechanical resistance.
Guidance magnets keep the train centered on the track even at high speeds.
Cooling superconducting magnets allows stronger magnetic fields with minimal energy loss.
Urban maglev systems reduce vibration damage to nearby buildings and infrastructure.
They also avoid emissions because they draw electricity from clean grid sources.
Maintenance costs drop significantly without moving parts like brakes or gears.
This technology proves that physics principles can reshape sustainable city mobility.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Magnetic levitation, or maglev, lifts trains using powerful electromagnets. 磁悬浮（maglev）利用强力电磁铁使列车悬浮。
Energy efficiency improves since less power is wasted overcoming mechanical resistance. 因无需克服机械阻力，能源效率得以提升。
Cooling superconducting magnets allows stronger magnetic fields with minimal energy loss. 冷却超导磁铁可在能量损耗极小的情况下产生更强磁场。

这篇中文题目最接近哪一句？磁悬浮如何实现城市交通的无摩擦运行一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？磁悬浮（maglev）利用强力电磁铁使列车悬浮。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） How Magnetic Levitation Enables Frictionless Urban Transit How to cook noodles A maths worksheet

Magnetic levitation, or maglev, lifts trains using powerful electromagnets.

Magnetic levitation, or maglev, lifts trains using powerful electromagnets.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Magnetic levitation, or maglev, lifts trains using powerful electromagnets.