问一下(off,along,on,around)+the coast 有什么区别?

问一下(off,along,on,around)+the coast 有什么区别?
问一下(off,along,on,around)+the coast 有什么区别?

问一下(off,along,on,around)+the coast 有什么区别?
off the coast:在海面上
Examples:
1.They had been wrecked (ie shipwrecked) off the coast of Africa.
他们的船在非洲沿海遇难损毁.
2.After months of drilling,oil was found off the coast.
经数月钻探,在沿海找到了石油.
3.I look at Cuba,ninety miles off the coast of the United States.
看看古巴,它离美国沿海仅九十英里.
4.It is a lone island off the coast of Guangdong,a mere dot,so to speak,in the South China Sea.
它是广东海岸边的一座孤岛,可说是南海上的一个小点.
along the coast:沿着海岸
Examples:
1.They traveled on the steamboat along the coast.
他们坐着小汽船沿着海岸旅行.
2.Fishing boats were anchored all along the coast.
渔船沿着岸抛锚停泊.
3.The Asian countries along the coast of the Pacific all came out against the US new military base in Japan.
太平洋沿岸的亚洲各国都宣布反对美国在日本的新军事基地.
4.A member of any of a group of South American Indian peoples living along the coast of Brazil,in the Amazon River valley,and in Paraguay.
图皮族居住在巴西,亚马孙河河谷和巴拉圭的南美洲印第安人的一个民族的成员
on the coast:
在岸上
沿岸
Examples:
1.A promontory of southeast Newfoundland,Canada,on the coast of the Avalon Peninsula.
莱思角加拿大纽芬兰省东南部一海角,位于亚法隆半岛沿岸
2.These beacons on the coast are to warn and guide ships.
这些海滩上的信号灯是用来提醒和指示船舶的.
3.The town lies on the coast.
该城位於海边.
around the coast 一般不这样用,用上面的就可以了.