这辆跑车的船尾设计不仅美观，还能有效降低风阻。

The sports car's ___boat-tail design is not only stylish but also reduces wind resistance effectively.

这种船尾型子弹的设计减少了空气阻力，提高了飞行稳定性。

The ___boat-tail bullet design reduces air drag and improves flight stability.

那只鸟的船形尾在阳光下闪闪发亮。

The bird's ___boat-tail glistened in the sunlight.