They'd reached one of the rustic bridges over an opaque emerald Isis tributary. TICKLED PINK (2002)`I believe that at one time this was a tributary of the Muddy River. THE SECRET OF THE FORGOTTEN CITY (2002)The camp was beside the grey shingle bed of a tributary stream. HIGH STAND (2002)
"EVE looked up anxiously as Reno rode back in from his short exploration of the tributary canyon. ONLY YOU (2002)
偶尔使用。在柯林斯辞典中， tributary 是3万个最常用词之一。
tributary 的定义—— 柯林斯 英语词典
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