微型显微镜太厉害了：如果我在身前伸展胳膊，显微镜会聚焦到我一片手指甲上的一小块。
The little telescopes are amazing: if I stretch my arm out in front of me, the telescopes focus on one-quarter of one of my fingernails.
微型显微镜太厉害了：如果我在身前伸展胳膊，显微镜会聚焦到我一片手指甲上的一小块。
The little telescopes are amazing: if I stretch my arm out in front of me, the telescopes focus on one-quarter of one of my fingernails.
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