英语翻译汉语（求助）

4.Aluminium alloys were introduced into the design of springboards. By the 1960s, the enhanced springiness of diving boards made possible dives at the 1-meter height that had only previously been performed at 3 metres.
20世纪60年代,铝合金被引入跳板的设计。提高跳板的弹性，使跳水在1 米高度达到以前3米高度的效果成为可能。