今天我们要学的词是 leaps and bounds.
在加利福尼亚州欧文堡的美国陆军国家训练中心展示的太阳能混合电力系统（资料图）
leaps and bounds 的意思是大踏步的、跨越式的发展。 While clean energy from the sun and wind is growing by leaps and bounds, fossil fuels still provide the vast majority of the world's energy. 尽管利用太阳能和风能等清洁能源迅猛发展，但全球绝大部分能源仍来自于化石燃料。
Technological innovations in smart phones grew in leaps and bounds in the early 2010s, with dramatic improvements in screen size, screen resolution, battery life, cameras and processor speed every year. 智能手机的技术创新在2010年代初迅猛发展，在屏幕尺寸、分辨率、电池寿命、自带相机和处理器速度上每年都有显着提高。
