Deutoxide
重水
🗣️ 情景例句
I have never confirmed that the Roswell base exists, but I can't deny it either.
我从没有说过拉兹威基地存在，但我也不会否认。
What number should I dial to get the operator?
我应该拨什么号码找到接线员？
I think I've caught a cold.
我想我得了感冒。