Diphosphane
二膦, 二磷烷
🗣️ 情景例句
I am calling on behalf of the Private Teacher Company.
我代表家教公司给您打电话。
The news has bucked us up.
这消息使我们欢欣鼓舞。
modern states 'invest'in institutions of learning to get back 'interest'
现代国家对教育机构投资，收回的"利息