They made artificial beaches and sandbars in areas inaccessible to people and dogs.
他们在人和狗无法到达的地方建造了人造海滩和人造沙洲。
2
The atolls are composed of live coral reefs and sandbars, situated atop a submarine ridge 960 kilometers long that rises abruptly from the depths of the Indian Ocean and runs from north to south.
环礁由活着的珊瑚礁和沙洲组成，生长在印度洋深处从南到北长贯960公里的陡峭海脊之上。
3
These cut-offs have had curious effects: they have thrown several river towns out into the rural districts, and built up sandbars and forests in front of them.