grind/ɡraɪnd/名词令人厌倦的苦事，苦差事Having to type up my handwritten work was a real grind.还得把手写的作业打出来，这让我叫苦不迭。/ɡraɪnd/动词磨，把…磨锋利，把…磨光She grinds her teeth in her sleep.她睡觉磨牙。碾碎，磨碎，把…磨成粉to grind coffee磨咖啡豆想跟读，去练习
