我们需要放大这张照片以便看清细节。

We need to ___enlarge this photo to see the details clearly.

老师让我们把这张地图放大以便更清楚地看到细节。

The teacher asked us to ___enlarge this map so we can see the details more clearly.

他们计划扩大产品线以吸引更多客户。

They plan to ___enlarge their product line to attract more customers.