Neutronography
中子照相法
🗣️ 情景例句
Thanks, Grandpa.
谢谢你 ，爷爷。
I have no secret of success but hard work.
成功无秘诀，只是努力干。
Until we are intelligent as to its laws and varieties,
直到我们理解了风俗的规律性和多样性，