měishù / kè / shàng / lǎoshī / ràng / wǒmen / yòng / cǎisè / qiānbǐ / liànxí / jiànbiàn / jìfǎ美术课上,老师让我们用彩色铅笔练习渐变技法。In art class, the teacher asked us to practice gradient techniques with colored pencils.