1. The artist must have spend hour etching the image on the glass. 这位美术家一定花了好几小时把这画像蚀刻在玻璃上。
2. The artist must have spent hours etching the image on the glass. “这”位美术家一定花了好几小时把“这”画像蚀刻在玻璃上。
3. I suggest you have another look at that etching in your hallway, the one you have always wondered about. 我建议你再检查一下你门厅里的那幅蚀刻画，就是你总是感到纳闷的那一幅。
英英解释
n.
1. an impression made from an etched plate
2. an etched plate made with the use of acid
3. making engraved or etched plates and printing designs from them
