1. Since the early twentieth century, geophysicists have understood that the mantle churns and roils like a thick soup. 自二十世纪初以来，地球物理学家已经了解到地幔像浓汤一样搅动和翻滚。
2. The singer churns out three albums each year. 这个歌手每年出三张唱片。
3. She churns out about ten new books every year. 她每年粗制滥造出大约十本书。
4. She churns out novels at the rate of three a year. 她以一年三本的速度粗制滥造地写小说。
5. Johnson churns out 3m a day, most of them for export. 德昌一天出产300万个马达，大部分用于出口。
