They had recrossed the River Gambia by ferry.

他们乘船又一次渡过了冈比亚河。

《柯林斯英汉双解大词典》

This person recognized the words for "river" and "guitar," and so Haley thought that his ancestor must have come from Gambia.

这个人认出了表示“江”和“吉他”的这两个词，于是哈利就认为他的祖先准是来自冈比亚。

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A river of western Africa flowing about, 2 'km (700 mi) from northern Guinea through southeast Senegal and Gambia to the Atlantic Ocean at Banjul.

西非的一条河流，流程，2 '公里(700英里)，从几内亚北部穿过塞内加尔和冈比亚东南部，最后在班珠尔流入大西洋。

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