Beryllocene
二茂铍
🗣️ 情景例句
You should use 'officer' to address a policeman.
你应该用 'officer' 来称呼警察。
You can stay assured that shipment will be effected according to the contract stipulation.
你尽管放心，我们将按合同规定如期装船。
Thank you very much.
非常感谢。