ratchet 核心词议:
n. 棘轮;棘齿
v. (使)渐进
ratchet 基本解释
n. (防倒转的)棘齿
vt. 安装棘轮于;松脱;把…造成棘齿形,于…作棘齿,在…上刻锯齿
速记方法
速记技巧
词源记忆法
来自法语rochet,线轴,纺锤,词源同rock,rocket.引申词义棘轮。插入字母t,比较bake,batch.
知识扩展
短语动词
短语动词 ratchet down (使)有一定减少(或降低) ratchet up (使)有一定上升(或提高) 查看更多 以下资源来自牛津词典 ratchet (sth)↔up (使)逐渐小幅增长 to increase, or make sth increase, repeatedly and by small amounts Overuse of credit cards has ratcheted up consumer debt to unacceptable levels. 滥用信用卡使消费债务逐渐增加到了难以接受的地步。 收起
ratchet 变化形式
复数: ratchets
第三人称单数: ratchets
过去式: ratcheted
过去分词: ratcheted
现在分词: ratcheting
中文词源:
ratchet 防止倒转的棘轮
来自法语 rochet,线轴,纺锤,词源同 rock,rocket.引申词义棘轮。插入字母 t,比较 bake,batch.
ratchet
精选例句
1、 The chair has a ratchet below it to adjust the height.
这把椅子下面有一个棘轮来调整高度。
常见考点例句:
- They have been driven by a ratchet effect .
- 它们是棘轮效应驱动下的产物。
- The colonel is caught in a ratchet and it is tightening .
- 如今卡扎菲被陷在棘齿之中,而棘齿有收紧之势。
- This creates a ratchet effect .
- 正是这种情况导致了棘轮效应。
- Games a and b must be set up to copy a ratchet , which means they must have some direct interaction .
- 游戏a和游戏b必须设计成模仿棘轮的方式,这意味着它们必须有直接的交互作用。
- Dr akeson , meanwhile , created a clever ratchet arrangement by attaching a polymerase enzyme to the ahl protein .
- 同时埃克森博士通过在ahl蛋白质上附着聚合酶,来创造了一种巧妙的棘轮排布。