Polynitroethylene
聚硝基乙烯
??? 情景例句
but I think we should face the truth.
但我認為我們應(yīng)面對現(xiàn)實。
All of those houses have been built in the last ten years.
所有那些房子在這10年里被造的。
Education, with its cycles of instruction so carefully worked out,
教育，以其教學(xué)周期如此精心地安排，