相关单词同義詞grinder, grinding tool, 臨近詞sharpen, sharpening steel, sharpened pencil, sharpen the pain, sharpening device, sharpening method, sharpen one's wits, sharpening circuit, sharpen a contrast, sharpening machine, sharpener amplifier相似詞sharp-eyed, sharpen, sharpen (sth) up, sharpen up your act idiom, Sharpie, sharpish, sharply, sharpshooter, 返回 sharpener