1. The continental shelf is the submerged part of a continent that extends from the shoreline to the continental slope.
大陆架是大陆的海底部分，从海岸线延伸到大陆坡。

2. The continental shelf is an important habitat for various marine organisms.
大陆架是各种海洋生物的重要栖息地。

3. Oil and gas exploration often takes place on the continental shelf.
石油和天然气勘探经常在大陆架上进行。

4. The width of the continental shelf can vary greatly depending on the location.
大陆架的宽度可以根据位置的不同而有很大变化。

5. The continental shelf plays a crucial role in the global carbon cycle.
大陆架在全球碳循环中发挥着至关重要的作用。

6. The biodiversity of the continental shelf is being threatened by pollution and overfishing.
大陆架的生物多样性正受到污染和过度捕捞的威胁。