I've swum the channel 34 times.

我已经游过海峡 34 次了。

Over time, channels developed between these basins, and water began to flow in an ongoing exchange that persists to this day.

随着时间的推移， 这些盆地之间形成了水道，水开始在持续不断的交换中流动，一直持续到今天。