Diphenylethlene
二苯基乙烯
🗣️ 情景例句
Please pack your products in accordance with our requirements.
请你方按照我们的要求包装货物。
Have you been listening?
你有没有在听啊？
Since the sea covers the greater part of the earth's surface,
既然海洋覆盖着地球的大部分表面，