Dideuteride
二氘化物
🗣️ 情景例句
And take measures to reinforce them. Please set your mind at rest.
并采取措施加固。请放心好了。
If I had known her telephone number, I would have called her.
如果我知道她的电话号码，我就给她打电话了。
and some of these propositions have been violently opposed.
对风俗的研究才是全面的，才会有收获。