这个瓶子是用透明玻璃制成的。

The bottle is made of ___clear glass.

湖水如此清澈，以至于你能看到底部。

The water in the lake is so ___clear that you can see the bottom.

我喜欢在那个湖里游泳，因为湖水非常清澈。

I love swimming in that lake because the water is very ___clear.