Polyketone
聚酮
🗣️ 情景例句
This weekend I'm going to install a home security system.
这个周末我要装一套家庭保安系统。
This stain is really stubborn.
这污垢去不掉。
Chickens slaughtered in the United States, claim officials in Brussels, are not fit to grace European tables.
布鲁塞尔的官员说，在美国屠宰的鸡不适于用来装点欧洲的餐桌。