巴拿马运河是国际航运的重要路线。

The Panama ___canal is a vital route for international shipping.

我们乘船沿着城市里的历史运河游览。

We took a boat trip along the historic ___canal in the city.

农民们使用这条运河将水引入他们的田地。

Farmers use this ___canal to bring water to their fields.