We often see people picking away at their teeth after eating. Actually, if the toothpick has too sharp or hard a tip, not to mention being used improperly, then it can easily harm the teeth and gums.
常看人吃飽飯後，悠哉遊哉地挑著根牙籤剔牙，其實牙籤如果質地太過尖硬，加上使用不當，很容易傷及牙齦和牙床。