Polyphosphazenes
[化] 含磷氮链聚合物
🗣️ 情景例句
The economy is booming in this country.
这个国家的经济形势一片大好。
Thank you for your inquiry, but we cannot make you an offer right now because we are presently unable to obtain appropriate materials.
谢谢贵方询价，但我们不能马上发盘，因为目前我们得不到合适的原料。
You have to learn when to ask for help and when to ask for information.
你得学会什么时候请求帮助，什么时候打听信息。