a device consisting of a bar or wheel with a set of angled teeth in which a pawl, cog, or tooth engages, allowing motion in one direction only
棘轮机构。
a bar or wheel which has such a set of teeth
棘齿。
〈喻〉 倒退的情形(或过程)
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yet another turn in the ratchet of state control over local experimentation .国家对地方实验进行的又一轮倒退性控制。
operate by means of a ratchet
棘轮驱动。
(
〈喻〉 使逐步升高(或降低)
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the Bank of Japan ratcheted up interest rates again .日本银行又在逐渐提高利率。
[no obj.]make a sound like a ratchet
发出棘轮声。
"mid 17th cent.: from French