例句與造句

1. This creates a collapsed depression, called a caldera, and releases vast amounts of volcanic material, usually through fissures that ring the caldera.
2. The main entrance is in a large collapsed depression, at the bottom of which is the scaffolded entrance to Great Douk Pot, and at the south-eastern end is the obvious entrance to the cave from which a waterfall issues.
3. It's difficult to find collapse depression in a sentence. 用collapse depression造句挺難的