ultra light alloy

例句：

1. 1.The new car has an ultra-light alloy body that makes it faster and more fuel efficient.
   这款新车采用了超轻合金车身，使得它更快、更省油。
2. 2. The aerospace industry relies on ultra-light alloys to make lightweight yet strong components.
   航空航天行业依赖超轻合金制造轻质而坚固的部件。
3. 3.The engineers used ultra-light alloy to design the aircraft's wings, which reduced its weight without sacrificing strength.
   工程师们使用超轻合金设计了飞机的机翼，既减轻了重量又没有牺牲强度。