音频下载[点击右键另存为]今天大家要学的词是 leaps and bounds.
在加利福尼亚州欧文堡的美国陆军国家练习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、跨越式的进步。 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. 尽管借助太阳能和风能等清洗能源迅猛进步，但全球绝大多数能源仍源于化石燃料。
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. 智能手机的技术革新在2010年代初迅猛进步，在屏幕尺寸、分辨率、电池寿命、自带相机和处置器速度上每年都有显着提升。
