yī / shēng / jiàn / yì / tā / shǎo / hē / kā / fēi / yīn / wèi / kā / fēi / yīn / shì / yì / zhǒng / cì / jī / wù

医生建议他少喝咖啡，因为咖啡因是一种刺激物。

The doctor advised him to drink less coffee because caffeine is a stimulant.