Energy and mass are equal and interchangeable.能量与质量相等而又是可以互相转换的。Interchangeable spray - can nozzles fitted to can to var y width of spray.可互换的水沫 - 罐子喷嘴适合将改变水沫的宽度装于漆灌.His greatest innovation was the use of interchangeable...
长裙子去年就不流行了.Long skirts went out last year.这里不流行台球.Billiards isn't popular in here.短裙几年前不流行了, 现在又再度流行了.Short skirts went out a few years ago, but they've come back again....
他乐得欢跳雀跃.He cut a caper to show how happy he was.小女孩穿着新衣在屋里雀跃.The little girl pranced about the room in her new clothes.那儿好几分钟里都是一片欢喜雀跃的场面.For several minutes a lively scene was enacted there....