/tʃɜ:n; tʃɝn/
n
1 machine in which milk or cream is beaten to make butter 搅乳器（用以搅拌牛奶或乳脂以制成黄油的机器）.
2 (Brit) large (usu metal) container in which milk is carried from a farm 奶桶（通常为金属的）.

v
1 [Tn]
(a) beat (milk or cream) to make butter 搅拌（牛奶或乳脂）以制黄油.
(b) make (butter) in this way （用此种方法）制（黄油）.
2 (a) [Tn, Tn.p] ~ sth (up) cause sth to move violently; stir or disturb sth 使某物猛动; 搅动; 扰乱某物
*motor boats churning (up) the peaceful waters of the bay 激荡着海湾平静水面的汽艇
* The earth had been churned up by the wheels of the tractor. 拖拉机轮子把泥土掀了起来.
* (fig 比喻) The bitter argument left her feeling churned up (ie agitated and upset) inside. 这场激烈的争论使她忐忑不安.
(b) [I] (esp of liquids) move about violently （尤指液体）翻腾
*the churning waters of a whirlpool 旋涡翻腾的水
* His stomach churned with nausea. 他的胃翻腾欲呕.
3 (phr v) churn sth out (infml 口) produce sth (usu of bad quality) in large amounts 大量生产某物（通常质量恶劣）; 粗制滥造
*She churns out romantic novels. 她写了很多浪漫小说, 质量很差.