Amberplex
离子交换膜
🗣️ 情景例句
The performance of the stock market can reflect economic conditions.
证券市场的表现能反应经济状况。
For how long?
要借多久？
It was noticed that there were no signs or warnings on the supply lines that ran round the port.
人们这才注意到，铺设在码头周围的供应管道上没有贴标签或告示。