test tube

汉语翻译

英语解释：

名词 test tube:

1. glass tube closed at one end

例句：

1. He demonstrated the principles with chemicals and test tubes.
   他借助化学药品和试管讲解了这些原理。
2. He held the test tube in his hand thoughtfully.
   他沉思地把试管拿在手里。