Hardmeter
硬度计
🗣️ 情景例句
If you watch carefully you will see how to do it.
你若细心观察，就会知道怎么做这件事。
So far I have been learning about England.
到目前为止，我一直在研究有关英格兰的事情。
The children pulled the boat up from the water. Then they started to look around the island.
孩子们把船从水中拉了上来。然后他们开始察看海岛的四周。