drip tube

例句：

1. 1. The doctor uses a dropper to administer medication.
   医生使用滴管给病人服药。
2. 2. The scientist used a drip tube to collect samples from the river.
   科学家使用滴管从河里收集样本。
3. 3.The teacher demonstrated how to use a drip tube for cleaning the classroom.
   老师演示了如何使用滴管来清洁教室。