Polyketone
聚酮
🗣️ 情景例句
If only we could bottle the fresh air.
要是我们能用瓶子将新鲜空气装回去多好。
This house is for rent.
此房出租。
The Great St.Bernard Pass connects Switzerland to Italy.
圣伯纳德大山口连接着瑞士与意大利，