Tetranitrocompound
四硝基化合物
🗣️ 情景例句
Nancy, would you like to come over the day after tomorrow?
南西，你后天要不要到我家来？
Many people were against the new freeway.
许多人反对新的高速公路。
I haven't seen him for five years.
我五年没有见到他了。