(1) Hello world
https://colab.research.google.com/notebooks/mlcc/hello_world.ipynb?hl=zh-cn
(2) 演示基本概念：张量、指令、图和会话
https://colab.research.google.com/notebooks/mlcc/tensorflow_programming_concepts.ipynb?hl=zh-cn#scrollTo=9IkBOsrNzahz
(3) 创建和操控张量
https://colab.research.google.com/notebooks/mlcc/creating_and_manipulating_tensors.ipynb?hl=zh-cn