Nitropolyurethane
硝基聚氨酯
🗣️ 情景例句
I can learn something
我能学到一些东西。
Where drums beat,laws are silent.
战鼓一响，法律无声。
A week later, the editor at last received a fax from the journalist.
一周之后，编辑终于接到记者的传真。