churns
n.
奶桶，搅拌桶( churn的名词复数 );
搅乳器;
v.
搅拌（牛奶或乳脂）以制黄油( churn的第三人称单数 );
搅动，扰乱某物;
（尤指液体）翻腾;
例句:
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Grief rarely churns out neatly or quickly, though.
来自WSJ
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Way before the water boils, it churns vigorously.
来自SA
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She churns out trashy romantic novels.
她不断拼凑些无聊的爱情小说.
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She churns out about ten new books every year.
她每年粗制滥造出大约十本书.
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This factory churns out lots and lots of cars a day.
这家工厂一天可生产很多汽车.
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The body constantly churns out new blood cells in the hollow spaces inside bone.
来自BBC