题目内容
v. to break or crush sth into very small pieces between two hard surfaces or using a special machine
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v. to become healthy again; to make sth healthy again
n. the small hard seeds of food plants such as wheat, rice, etc. ;a single seed of such a plant;
v. have a wish or desire to know something;
n. help or advice that is given to sb, especially by sb older or with more experience
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