Deutohydrogen
[医] 氘(音刀), 重氢
🗣️ 情景例句
we need to put together volunteers
我们需要募集义工
We must stress that these payment terms are very important to us.
我们必须强调这些付款条件对我们很重要。
He was on his way to a lecture, when a tourist stopped him and asked him for directions.
他走在去听课的路上，此时一位游客拦住他问路。