Radioactive vitamine b12
[化] 放射性维生素B12
🧩 词语组成解析
n. 维生素, 维他命
🗣️ 情景例句
Where can I find the information desk?
咨询台在哪儿？
Competition between bidders for this valuable painting has been keen.
拍卖时各出价对这幅名画竞争很激烈。
The same policeman was just walking slowly past the entrance, when Patrick asked the same question.
昨天的那位警察正从门口慢慢走过，帕特里克上前问了和昨天同样的问题。