流线型火车

例句：

1. 1. The new sports car has a sleek and streamlined design.
   这款新运动轿车设计流畅且流线型。
2. 2. The aircraft is designed to be aerodynamic for maximum efficiency.
   这架飞机的设计是为了最大限度地提高效率而具有空气动力学特性。
3. 3. The rocket's shape is streamlined to reduce drag.
   火箭的形状被设计为减少阻力。