Lockwasher
锁紧垫圈; 弹簧垫圈; 止动垫圈
🗣️ 情景例句
He keeps good company.
他和好人来往。
I'm afraid he will lose your money.
我怕他会浪费你的金钱。
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：