mù jiàng / yòng / chuí zi / bǎ / tū chū de / dīng tóu / qiāo píng / bì miǎn / tā / guā shāng / rén de / shǒu木匠用锤子把凸出的钉头敲平,避免它刮伤人的手。The carpenter hammered the protruding nail head flat to keep it from scratching someone's hand.