The close-up of the boy taking liquid sample by the dropper in science school lab. 4K.

Name: The close-up of the boy taking liquid sample by the dropper in science school lab. 4K.
Uploaded: 2017-08-29
Duration: 10 s
Channel: svteam
Description: The close-up of the boy taking liquid sample by the dropper in science school lab. 4K.

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