test tube

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Most recently, those crazy scientists have even recreated a 'supernova' in a test tube!
最近，那些疯狂的科学家们甚至在试管里搞出一个“超新星”！
Since the birth of the first " test tube baby" in 1978, more than three million children have been born with the help of reproductive technology.
自1978年首例试管婴儿出生以来，已有超过三百万的儿童在这种生殖技术的辅助下出生。
It is one thing to manipulate cells in a test tube, quite another to treat people.
用试管做细胞实验是一回事，用于人身上又是另一回事了。

Let's imagine, as he says, human beings as if they were in a sort of laboratory test tube.
让我们设想,人类就像生活在实验室的试管里。
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Here's a way that you can do it in a test tube without using any cells by this process called Polymerase Chain Reaction.
但有一个方法可以让你在试管中完成,不用细胞,这个方法叫聚合酶链式反应
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In fact you do not have to kill any animals for this kind of research because we do everything in a test tube.
其实，做这种研究,你根本用不着杀害任何动物,因为试验都是在试管中进行的。
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Could something as dumb and as mechanical as a robotic test tube compete with old-fashioned ingenuity?
FORBES: A hail of silver bullets

a small glass tube with one closed and rounded end, used in scientific experiments

A test tube is a small tube-shaped container made from glass. Test tubes are used in laboratories.