The plan was to build massive steel gates separating the canal into multiple chambers with different water levels.

该计划是建造巨大的钢闸门，将运河分隔成多个水位不同的腔室。

The barrier consists of ten huge steel gates that are usually submerged — but can be raised into position in case of emergency.

防洪堤由10个巨大的钢门组成，这些钢门通常在水下，但在紧急情况下可以升起。