冰箱的冷凝器将制冷剂气体冷却成液体。

The refrigerator's ___condenser cools the refrigerant gas into a liquid.

显微镜的聚光镜需要清洁才能获得清晰的图像。

The microscope's ___condenser needs cleaning to get a clear image.

这个电路中的电容器需要更换，因为它不再能储存电荷。

The ___condenser in this circuit needs to be replaced as it can no longer store electrical charge.