Determeter
(往复式)去污试验仪
🗣️ 情景例句
It's time we hired a secretary to answer the phones.
我们早就该请一个秘书接听电话了。
Jane blushed with pride.
珍因为自傲而丢了丑。
'Could I have those two tickets please?' I asked.
“我可以买那两张票吗？”我问。